1
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Yang Z, Zhang W, Zhu C, Wang Z, Guan J, Huo Y, Tang X, Shi W, Xia K, Liu YX, Yang L, Zhang J. Order transfer in a hybrid Raman-laser-optomechanical resonator. OPTICS EXPRESS 2023; 31:36836-36844. [PMID: 38017825 DOI: 10.1364/oe.502262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 09/18/2023] [Indexed: 11/30/2023]
Abstract
Order is one of the most important concepts to interpret various phenomena such as the emergence of turbulence and the life-evolution process. The generation of laser can also be treated as an ordering process in which the interaction between the laser beam and the gain medium leads to the correlation between photons in the output optical field. Here, we demonstrate experimentally in a hybrid Raman-laser-optomechanical system that an ordered Raman laser can be generated from an entropy-absorption process by a chaotic optomechanical resonator. When the optomechanical resonator is chaotic or disordered enough, the Raman-laser field is in an ordered lasing mode. This can be interpreted by the entropy transfer from the Raman-laser mode to the chaotic motion mediated by optomechanics. Different order parameters, such as the box-counting dimension, the maximal Lyapunov exponent, and the Kolmogorov entropy, are introduced to quantitatively analyze this entropy transfer process, by which we can observe the order transfer between the Raman-laser mode and the optomechanical resonator. Our study presents a new mechanism of laser generation and opens up new dimensions of research such as the modulation of laser by optomechanics.
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2
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Ni D, Späth M, Klämpfl F, Hohmann M. Properties and Applications of Random Lasers as Emerging Light Sources and Optical Sensors: A Review. SENSORS (BASEL, SWITZERLAND) 2022; 23:247. [PMID: 36616846 PMCID: PMC9824070 DOI: 10.3390/s23010247] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/16/2022] [Accepted: 12/21/2022] [Indexed: 06/17/2023]
Abstract
In a random laser (RL), optical feedback arises from multiple scattering instead of conventional mirrors. RLs generate a laser-like emission, and meanwhile take advantage of a simpler and more flexible laser configuration. The applicability of RLs as light sources and optical sensors has been proved. These applications have been extended to the biological field, with tissues as natural scattering materials. Herein, the current state of the RL properties and applications was reviewed.
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Affiliation(s)
- Dongqin Ni
- Institute of Photonic Technologies (LPT), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Konrad-Zuse-Straße 3/5, 91052 Erlangen, Germany
- Erlangen Graduate School in Advanced Optical Technologies (SAOT), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Paul-Gordan-Straße 6, 91052 Erlangen, Germany
| | - Moritz Späth
- Institute of Photonic Technologies (LPT), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Konrad-Zuse-Straße 3/5, 91052 Erlangen, Germany
- Erlangen Graduate School in Advanced Optical Technologies (SAOT), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Paul-Gordan-Straße 6, 91052 Erlangen, Germany
| | - Florian Klämpfl
- Institute of Photonic Technologies (LPT), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Konrad-Zuse-Straße 3/5, 91052 Erlangen, Germany
- Erlangen Graduate School in Advanced Optical Technologies (SAOT), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Paul-Gordan-Straße 6, 91052 Erlangen, Germany
| | - Martin Hohmann
- Institute of Photonic Technologies (LPT), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Konrad-Zuse-Straße 3/5, 91052 Erlangen, Germany
- Erlangen Graduate School in Advanced Optical Technologies (SAOT), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Paul-Gordan-Straße 6, 91052 Erlangen, Germany
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3
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Oh C, Ma HJ, Lee K, Kim DK, Park Y. Non-resonant lasing in a deep-hole scattering cavity. OPTICS EXPRESS 2022; 30:47816-47825. [PMID: 36558700 DOI: 10.1364/oe.475610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 11/15/2022] [Indexed: 06/17/2023]
Abstract
Random lasers are promising in the spectral regime, wherein conventional lasers are unavailable, with advantages of low fabrication costs and applicability of diverse gain materials. However, their practical application is hindered by high threshold powers, low power efficiency, and difficulties in light collection. Here, we demonstrate a power-efficient easy-to-fabricate non-resonant laser using a deep hole on a porous gain material. The laser action in this counterintuitive cavity was enabled by non-resonant feedback from strong diffuse reflections on the inner surface. Additionally, significant enhancements in slope efficiency, threshold power, and directionality were obtained from cavities fabricated on a porous Nd:YAG ceramic.
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4
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Gayathri R, Suchand Sandeep CS, Gummaluri VS, Asik RM, Padmanabhan P, Gulyás B, Vijayan C, Murukeshan VM. Plasmonic random laser enabled artefact-free wide-field fluorescence bioimaging: uncovering finer cellular features. NANOSCALE ADVANCES 2022; 4:2278-2287. [PMID: 36133703 PMCID: PMC9417316 DOI: 10.1039/d1na00866h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 03/31/2022] [Indexed: 06/16/2023]
Abstract
Narrow bandwidth, high brightness, and spectral tunability are the unique properties of lasers that make them extremely desirable for fluorescence imaging applications. However, due to the high spatial coherence, conventional lasers are often incompatible for wide-field fluorescence imaging. The presence of parasitic artefacts under coherent illumination causes uneven excitation of fluorophores, which has a critical impact on the reliability, resolution, and efficiency of fluorescence imaging. Here, we demonstrate artefact-free wide-field fluorescence imaging with a bright and low threshold silver nanorod based plasmonic random laser, offering the capability to image finer cellular features with sub-micrometer resolution even in highly diffusive biological samples. A spatial resolution of 454 nm and up to 23% enhancement in the image contrast in comparison to conventional laser illumination are attained. Based on the results presented in this paper, random lasers, with their laser-like properties and spatial incoherence are envisioned to be the next-generation sources for developing highly efficient wide-field fluorescence imaging systems having high spatial and temporal resolution for real-time, in vivo bioimaging.
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Affiliation(s)
- R Gayathri
- Centre for Optical and Laser Engineering (COLE), School of Mechanical and Aerospace Engineering, Nanyang Technological University 50 Nanyang Avenue 639798 Singapore
- Department of Physics, Indian Institute of Technology Madras Chennai 600036 India
| | - C S Suchand Sandeep
- Centre for Optical and Laser Engineering (COLE), School of Mechanical and Aerospace Engineering, Nanyang Technological University 50 Nanyang Avenue 639798 Singapore
| | - V S Gummaluri
- Centre for Optical and Laser Engineering (COLE), School of Mechanical and Aerospace Engineering, Nanyang Technological University 50 Nanyang Avenue 639798 Singapore
| | - R Mohamed Asik
- Cognitive Neuroimaging Centre (CONIC), Nanyang Technological University 59 Nanyang Drive 636921 Singapore
- Department of Animal Science, Bharathidasan University Tiruchirappalli 620024 India
| | - Parasuraman Padmanabhan
- Cognitive Neuroimaging Centre (CONIC), Nanyang Technological University 59 Nanyang Drive 636921 Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University 608232 Singapore
| | - Balázs Gulyás
- Cognitive Neuroimaging Centre (CONIC), Nanyang Technological University 59 Nanyang Drive 636921 Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University 608232 Singapore
- Department of Clinical Neuroscience, Karolinska Institute 17176 Stockholm Sweden
| | - C Vijayan
- Department of Physics, Indian Institute of Technology Madras Chennai 600036 India
| | - V M Murukeshan
- Centre for Optical and Laser Engineering (COLE), School of Mechanical and Aerospace Engineering, Nanyang Technological University 50 Nanyang Avenue 639798 Singapore
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5
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Tommasi F, Auvity B, Fini L, Martelli F, Cavalieri S. Direct Measurement of the Reduced Scattering Coefficient by a Calibrated Random Laser Sensor. SENSORS (BASEL, SWITZERLAND) 2022; 22:1401. [PMID: 35214302 PMCID: PMC8963062 DOI: 10.3390/s22041401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/28/2022] [Accepted: 02/08/2022] [Indexed: 06/14/2023]
Abstract
The research in optical sensors has been largely encouraged by the demand for low-cost and less or non-invasive new detection strategies. The invention of the random laser has opened a new frontier in optics, providing also the opportunity to explore new possibilities in the field of sensing, besides several different and peculiar phenomena. The main advantage in exploiting the physical principle of the random laser in optical sensors is due to the presence of the stimulated emission mechanism, which allows amplification and spectral modification of the signal. Here, we present a step forward in the exploitation of this optical phenomenon by a revisitation of a previous experimental setup, as well as the measurement method, in particular to mitigate the instability of the results due to shot-to-shot pump energy fluctuations. In particular, the main novelties of the setup are the use of optical fibers, a reference sensor, and a peristaltic pump. These improvements are devoted to: eliminating optical beam alignment issues; improving portability; mitigating the variation in pump energy and gain medium performances over time; realizing an easy and rapid change of the sensed medium. The results showed that such a setup can be considered a prototype for a portable device for directly measuring the scattering of liquid samples, without resorting to complicated numerical or analytic inversion procedures of the measured data, once the suitable calibration of the system is performed.
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Affiliation(s)
- Federico Tommasi
- Dipartimento di Fisica e Astronomia, Università di Firenze, Via Sansone 1, 50019 Sesto Fiorentino, Italy; (L.F.); (F.M.)
| | - Baptiste Auvity
- Département de Physique, Université Paris-Saclay, Bâtiment Hbar 625-Porte 333 Rue Louis de Broglie, 91405 Orsay, France;
| | - Lorenzo Fini
- Dipartimento di Fisica e Astronomia, Università di Firenze, Via Sansone 1, 50019 Sesto Fiorentino, Italy; (L.F.); (F.M.)
| | - Fabrizio Martelli
- Dipartimento di Fisica e Astronomia, Università di Firenze, Via Sansone 1, 50019 Sesto Fiorentino, Italy; (L.F.); (F.M.)
| | - Stefano Cavalieri
- Dipartimento di Fisica e Astronomia, Università di Firenze, Via Sansone 1, 50019 Sesto Fiorentino, Italy; (L.F.); (F.M.)
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6
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Hosseini MS, Yazdani E, Sajad B. Narrow-band random Raman lasing from Rhodamine 6G assisted by cascaded stimulated Raman scattering effect. Sci Rep 2021; 11:21747. [PMID: 34741105 PMCID: PMC8571289 DOI: 10.1038/s41598-021-01354-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 10/26/2021] [Indexed: 11/22/2022] Open
Abstract
This study reports the first experimental observation of cascaded stimulated Raman scattering (SRS) generation in a colloidal disordered medium. Generation of the cascaded effect requires both a high Raman gain and pump power in the disordered medium. Here, to extend effective path lengths of photons into the Raman gain medium for producing additional SRS processes, ZnO microspheres with abundant nano-protrusions as suitable scattering centers are proposed. It is explained that nano-protrusions on the surface of the spheres can act as nano reflectors and significantly provide potent feedback in the disordered system. This provided feedback via nano-protrusions boosts cascaded SRS generation to allow the appearance of higher Raman signals of Rhodamine 6G dye solution at a low scatterer concentration of 5 mg/ml. The threshold for the formation of the first Raman signal is measured at about 60 mJ/pulse. Also, the evolution of Raman signals under several fixed pump pulses is examined to investigate the stability from pulse to pulse. Our findings provide promising perspectives for achieving the single-frequency laser sources and generate desirable wavelengths for specific applications.
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Affiliation(s)
| | - Elnaz Yazdani
- Department of Physics, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran.
| | - Batool Sajad
- Department of Physics, Faculty of Physics and Chemistry, Alzahra University, Tehran, Iran
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7
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Gorelik VS, Skrabatun AV. Stimulated multifrequency Raman scattering of light in a polycrystalline sodium bromate powder. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 245:118889. [PMID: 32920443 DOI: 10.1016/j.saa.2020.118889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 08/12/2020] [Accepted: 08/26/2020] [Indexed: 06/11/2023]
Abstract
The observation of multifrequency stimulated Raman scattering of light in a thin powder layer of a gyrotropic crystal of sodium bromate when excited by intense ultrashort pulses of the second optical harmonic (λ = 532 nm) of an yttrium aluminum garnet laser is reported. Five Stokes and anti-Stokes satellites corresponding to the excitation of the intramolecular optical mode of NaBrO3 crystal were present in the recorded spectra. In addition, Raman satellites corresponding to the excitation of lattice modes, as well as their combinations with intramolecular modes, were found in the spectra of stimulated Raman scattering. The prospects of using stimulated Raman scattering spectroscopy for express analysis of gyrotropic media: gyrotropic polycrystals, crystalline amino acids, proteins, DNA, etc. have been established.
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Affiliation(s)
- V S Gorelik
- P.N. Lebedev Physical Institute, Russian Academy of Sciences, 53, Leninskiy Prospekt, Moscow, Russia; Bauman Moscow State Technical University, ul. Baumanskaya 2-ya, 5, Moscow, Russia
| | - A V Skrabatun
- P.N. Lebedev Physical Institute, Russian Academy of Sciences, 53, Leninskiy Prospekt, Moscow, Russia.
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8
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Lee K, Ma HJ, Rotermund F, Kim DK, Park Y. Non-resonant power-efficient directional Nd:YAG ceramic laser using a scattering cavity. Nat Commun 2021; 12:8. [PMID: 33397891 PMCID: PMC7782720 DOI: 10.1038/s41467-020-20114-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 10/30/2020] [Indexed: 02/05/2023] Open
Abstract
Non-resonant lasers exhibit the potential for stable and consistent narrowband light sources. Furthermore, non-resonant lasers do not require well-defined optics, and thus has considerably diversified the available types of laser gain materials including powders, films, and turbid ceramics. Despite these intrinsic advantages, the practical applications of non-resonant lasers have been limited so far, mainly because of their low power efficiency and omnidirectional emission. To overcome these limitations, here we propose a light trap design for non-resonant lasers based on a spherical scattering cavity with a small entrance. Using a porous Nd3+:YAG ceramic, directional laser emission could be observed with significant enhancements in the slope efficiency and linewidth (down to 32 pm). A theoretical model is also developed to describe and predict the operation characteristics of proposed non-resonant laser.
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Affiliation(s)
- KyeoReh Lee
- Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea. .,KAIST Institute for Health Science and Technology, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea.
| | - Ho Jin Ma
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea
| | - Fabian Rotermund
- Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea
| | - Do Kyung Kim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea.
| | - YongKeun Park
- Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea. .,KAIST Institute for Health Science and Technology, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea.
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9
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Gorelik VS, Tcherniega NV, Schevchenko MA, Skrabatun AV, Bi D, Baranov AN, Kudryavtseva AD, Maresev AN. Stimulated Raman scattering of light in suspension of diamond microparticles in ethanol and in water. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 237:118418. [PMID: 32380431 DOI: 10.1016/j.saa.2020.118418] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 04/20/2020] [Accepted: 04/25/2020] [Indexed: 06/11/2023]
Abstract
The spectra of stimulated Raman scattering of light in ethanol and in water suspensions containing diamond microparticles with sizes 0.2-0.3 μm were investigated. An excitation radiation source was a pulsed ruby laser with a generation wavelength λ0 = 694.3 nm, a pulse duration τp ≈ 20 ns, a maximum beam energy of Emax = 0.6 J, a spectral width Δν = 0.015 cm-1, and a beam divergence 3.5·10-4 rad. For the first time, the observation of stimulated Raman scattering of light at a boson peak in suspension of diamonds microcrystals with close sizes (0.2-0.3 μm) in a liquid is reported. The corresponding spectra were recorded using a Fabry-Perot interferometer. In this case, the frequency shift of the stimulated Stokes Raman scattering depended on the size of the diamond microparticles introduced into the liquid and amounted to ~1 cm-1. In addition, stimulated Raman scattering by a fundamental optical mode with a frequency shift ν = 1331 cm-1 was observed. In this case, the Raman spectra were recorded using a small-sized spectrometer with a multi-element receiver, detecting radiation in the range of 200-1000 nm. At a sufficiently high intensity of the exciting radiation, the Stokes and anti-Stokes satellites were simultaneously present in the spectrum of stimulated Raman scattering. The obtained results on stimulated scattering of diamond microparticles in liquids are of interest for estimating the sizes of microcrystals from scattering spectra at a boson peak, as well as for creating a frequency comb of emitters based on stimulated Raman scattering with a large frequency shift.
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Affiliation(s)
- V S Gorelik
- P.N. Lebedev Physical Institute, Russian Academy of Sciences, 53, Leninskiy Prospekt, Moscow, Russia; Bauman Moscow State Technical University, ul. Baumanskaya 2-ya, 5, Moscow, Russia.
| | - N V Tcherniega
- P.N. Lebedev Physical Institute, Russian Academy of Sciences, 53, Leninskiy Prospekt, Moscow, Russia
| | - M A Schevchenko
- P.N. Lebedev Physical Institute, Russian Academy of Sciences, 53, Leninskiy Prospekt, Moscow, Russia
| | - A V Skrabatun
- P.N. Lebedev Physical Institute, Russian Academy of Sciences, 53, Leninskiy Prospekt, Moscow, Russia.
| | - Dongxue Bi
- Bauman Moscow State Technical University, ul. Baumanskaya 2-ya, 5, Moscow, Russia
| | - A N Baranov
- M.V. Lomonosov Moscow State University, 1, Leninskie Gory, Moscow, Russia
| | - A D Kudryavtseva
- P.N. Lebedev Physical Institute, Russian Academy of Sciences, 53, Leninskiy Prospekt, Moscow, Russia
| | - A N Maresev
- Moscow Institute of Physics of Technology, 9 Institutskiy per., Dolgoprudny, Moscow Region, Russia
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10
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Moura AL, Carreño SJ, Pincheira PIR, Maia LJQ, Jerez V, Raposo EP, Gomes ASL, de Araújo CB. Nonlinear effects and photonic phase transitions in Nd 3+-doped nanocrystal-based random lasers. APPLIED OPTICS 2020; 59:D155-D162. [PMID: 32400638 DOI: 10.1364/ao.383477] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 02/13/2020] [Indexed: 06/11/2023]
Abstract
The interplay between gain and scattering of light propagating in disordered media allows operation of random lasers (RLs)-lasers without conventional optical cavities. In the present paper, we review our recent contributions in this area, which include the demonstration of self-second-harmonic and self-sum-frequency generation, the characterization of Lévy's statistics of the output intensity fluctuations, and replica symmetry breaking (analogue to the spin-glass phase transition) by RLs based on nanocrystals containing trivalent neodymium ions.
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11
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Lee YJ, Yeh TW, Yang ZP, Yao YC, Chang CY, Tsai MT, Sheu JK. A curvature-tunable random laser. NANOSCALE 2019; 11:3534-3545. [PMID: 30569051 DOI: 10.1039/c8nr09153f] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
The application of random lasers has been restricted due to the absence of a well-defined resonant cavity, as the lasing action mainly depends on multiple light scattering induced by intrinsic disorders of the laser medium to establish the required optical feedback that hence increases the difficulty in efficiently tuning and modulating random lasing emissions. This study investigated whether the transport mean free path of emitted photons within disordered scatterers composed of ZnO nanowires is tunable by a curvature bending applied to the flexible polyethylene terephthalate (PET) substrate underneath, thereby creating a unique light source that can be operated above and below the lasing threshold for desirable spectral emissions. For the first time, the developed curvature-tunable random laser is implemented for in vivo biological imaging with much lower speckle noise compared to the non-lasing situation through simple mechanical bending, which is of great potential for studying the fast-moving physiological phenomenon such as blood flow patterns in mouse ear skin. It is expected that the experimental demonstration of the curvature-tunable random laser can provide a new route to develop disorder-based optoelectronic devices.
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Affiliation(s)
- Ya-Ju Lee
- Institute of Electro-Optical Science and Technology, National Taiwan Normal University, 88, Sec.4, Ting-Chou Road, Taipei 116, Taiwan.
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12
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Shutova M, Shutov AD, Zhdanova AA, Thompson JV, Sokolov AV. Coherent Raman Generation Controlled by Wavefront Shaping. Sci Rep 2019; 9:1565. [PMID: 30733515 PMCID: PMC6367464 DOI: 10.1038/s41598-018-38302-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Accepted: 12/21/2018] [Indexed: 12/03/2022] Open
Abstract
We investigate the possibility of tailoring coherent Raman generated spectra via adaptive wavefront optimization. Our technique combines a spatial light modulator and a spectrometer providing a feedback loop. The algorithm is capable of controlling the Raman generation, producing broader spectra and an improved overall efficiency, and increasing the intensity of high-order sidebands. Moreover, by wavefront optimization we can extend the generated spectra towards the blue spectral region and increase the total power of generated sidebands. Mutual coherence and equal frequency separation of the multiple Raman sidebands are of interest for the synthesis of ultrashort light pulses with the total spectral bandwidth extending over ultraviolet, visible and near-infrared wavelengths.
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Affiliation(s)
- Mariia Shutova
- Institute for Quantum Science and Engineering, Department of Physics and Astronomy, Texas A&M University, College Station, TX, 77843-4242, USA.
| | - Anton D Shutov
- Institute for Quantum Science and Engineering, Department of Physics and Astronomy, Texas A&M University, College Station, TX, 77843-4242, USA
| | - Alexandra A Zhdanova
- Institute for Quantum Science and Engineering, Department of Physics and Astronomy, Texas A&M University, College Station, TX, 77843-4242, USA
| | - Jonathan V Thompson
- Institute for Quantum Science and Engineering, Department of Physics and Astronomy, Texas A&M University, College Station, TX, 77843-4242, USA
| | - Alexei V Sokolov
- Institute for Quantum Science and Engineering, Department of Physics and Astronomy, Texas A&M University, College Station, TX, 77843-4242, USA
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13
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Gummaluri VS, Krishnan SR, Vijayan C. Stokes mode Raman random lasing in a fully biocompatible medium. OPTICS LETTERS 2018; 43:5865-5868. [PMID: 30499961 DOI: 10.1364/ol.43.005865] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 11/02/2018] [Indexed: 06/09/2023]
Abstract
We demonstrate for the first time, to the best of our knowledge, Raman random lasing in a continuous-wave (CW) excited, completely biocompatible and biodegradable carrot medium naturally composed of fibrous cellulose scattering medium and rich carotene Raman gain medium. The CW-laser-induced photoluminescence threshold and linewidth analysis at the Stokes modes of carotene show a characteristic lasing action with a threshold of 130 W/cm2 and linewidth narrowing with mode Q factor up to 1300. Polarization study of output modes reveals that lasing mode mostly retains the source polarization state. A neat and interesting linear temperature dependence of emission intensity is also discussed. Easy availability, biocompatibility, excitation-dependent emission wavelength selectivity, and temperature sensitivity are hallmarks of this elegant Raman laser medium with strong potential as an optical source for applications in bio-sensing, imaging, and spectroscopy.
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14
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Song P, Wang JH, Zhang M, Yang F, Lu HJ, Kang B, Xu JJ, Chen HY. Three-level spaser for next-generation luminescent nanoprobe. SCIENCE ADVANCES 2018; 4:eaat0292. [PMID: 30128353 PMCID: PMC6097815 DOI: 10.1126/sciadv.aat0292] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 07/11/2018] [Indexed: 05/14/2023]
Abstract
The development of modern biological and medical science highly depends on advanced luminescent probes. Current probes typically have wide emission spectra of 30 to 100 nm, which limits the number of resolvable colors that are simultaneously labeled on samples. Spasers, the abbreviation for surface plasmon lasers, have ultranarrow lasing spectra by stimulated light amplification in the plasmon nanocavity. However, high threshold (>102 mJ cm-2) and short lasing lifetime (approximately picoseconds to nanoseconds) still remain obstacles for current two-level spaser systems. We demonstrated a new type of a three-level spaser using triplet-state electrons. By prolonging the upper state lifetime and controlling the energy transfer, high gain compensation was generated. This probe, named delayed spasing dots (dsDs), about 50 to 60 nm in size, exhibited a spectral linewidth of ~3 nm, an ultralow threshold of ~1 mJ cm-2, and a delayed lasing lifetime of ~102 μs. As the first experimental realization of the three-level spaser system, our results suggested a general strategy to tune the spasing threshold and dynamics by engineering the energy level of the gain medium and the energy transfer process. These dsDs have the potential to become new-generation luminescent probes for super-multiplex biological analysis without disturbance from short lifetime background emission.
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Affiliation(s)
| | | | | | | | | | - Bin Kang
- Corresponding author. (B.K.); (J.-J.X.); (H.-Y.C.)
| | - Jing-Juan Xu
- Corresponding author. (B.K.); (J.-J.X.); (H.-Y.C.)
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15
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Lee YJ, Chou CY, Yang ZP, Nguyen TBH, Yao YC, Yeh TW, Tsai MT, Kuo HC. Flexible random lasers with tunable lasing emissions. NANOSCALE 2018; 10:10403-10411. [PMID: 29671442 DOI: 10.1039/c8nr00229k] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
In this study, we experimentally demonstrated a flexible random laser fabricated on a polyethylene terephthalate (PET) substrate with a high degree of tunability in lasing emissions. Random lasing oscillation arises mainly from the resonance coupling between the emitted photons of gain medium (Rhodamine 6G, R6G) and the localized surface plasmon (LSP) of silver nanoprisms (Ag NPRs), which increases the effective cross-section for multiple light scattering, thus stimulating the lasing emissions. More importantly, it was found that the random lasing wavelength is blue-shifted monolithically with the increase in bending strains exerted on the PET substrate, and a maximum shift of ∼15 nm was achieved in the lasing wavelength, when a 50% bending strain was exerted on the PET substrate. Such observation is highly repeatable and reversible, and this validates that we can control the lasing wavelength by simply bending the flexible substrate decorated with the Ag NPRs. The scattering spectrum of the Ag NPRs was obtained using a dark-field microscope to understand the mechanism for the dependence of the wavelength shift on the exerted bending strains. As a result, we believe that the experimental demonstration of tunable lasing emissions based on the revealed structure is expected to open up a new application field of random lasers.
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Affiliation(s)
- Ya-Ju Lee
- Institute of Electro-Optical Science and Technology, National Taiwan Normal University, 88, Sec.4, Ting-Chou Road, Taipei 116, Taiwan.
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16
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Liu C, Gao W, Yang B, Zhang S. Disorder-Induced Topological State Transition in Photonic Metamaterials. PHYSICAL REVIEW LETTERS 2017; 119:183901. [PMID: 29219571 DOI: 10.1103/physrevlett.119.183901] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Indexed: 06/07/2023]
Abstract
The topological state transition has been widely studied based on the quantized topological band invariant such as the Chern number for the system without intense randomness that may break the band structures. We numerically demonstrate the disorder-induced state transition in the photonic topological systems for the first time. Instead of applying the ill-defined topological band invariant in a disordered system, we utilize an empirical parameter to unambiguously illustrate the state transition of the topological metamaterials. Before the state transition, we observe a robust surface state with well-confined electromagnetic waves propagating unidirectionally, immune to the disorder from permittivity fluctuation up to 60% of the original value. During the transition, a hybrid state composed of a quasiunidirectional surface mode and intensively localized hot spots is established, a result of the competition between the topological protection and Anderson localization.
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Affiliation(s)
- Changxu Liu
- School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, United Kingdom
| | - Wenlong Gao
- School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, United Kingdom
| | - Biao Yang
- School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, United Kingdom
| | - Shuang Zhang
- School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, United Kingdom
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17
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Resta V, Camposeo A, Montinaro M, Moffa M, Kazlauskas K, Jursenas S, Tomkeviciene A, Grazulevicius JV, Pisignano D. Nanoparticle-doped electrospun fiber random lasers with spatially extended light modes. OPTICS EXPRESS 2017; 25:24604-24614. [PMID: 29041405 DOI: 10.1364/oe.25.024604] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 09/02/2017] [Indexed: 05/26/2023]
Abstract
Complex assemblies of light-emitting polymer nanofibers with molecular materials exhibiting optical gain can lead to important advance to amorphous photonics and to random laser science and devices. In disordered mats of nanofibers, multiple scattering and waveguiding might interplay to determine localization or spreading of optical modes as well as correlation effects. Here we study electrospun fibers embedding a lasing fluorene-carbazole-fluorene molecule and doped with titania nanoparticles, which exhibit random lasing with sub-nm spectral width and threshold of about 9 mJ cm-2 for the absorbed excitation fluence. We focus on the spatial and spectral behavior of optical modes in the disordered and non-woven networks, finding evidence for the presence of modes with very large spatial extent, up to the 100 µm-scale. These findings suggest emission coupling into integrated nanofiber transmission channels as effective mechanism for enhancing spectral selectivity in random lasers and correlations of light modes in the complex and disordered material.
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18
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Thompson JV, Hokr BH, Kim W, Ballmann CW, Applegate BE, Jo J, Yamilov A, Cao H, Scully MO, Yakovlev VV. Enhanced coupling of light into a turbid medium through microscopic interface engineering. Proc Natl Acad Sci U S A 2017; 114:7941-7946. [PMID: 28701381 PMCID: PMC5544321 DOI: 10.1073/pnas.1705612114] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
There are many optical detection and sensing methods used today that provide powerful ways to diagnose, characterize, and study materials. For example, the measurement of spontaneous Raman scattering allows for remote detection and identification of chemicals. Many other optical techniques provide unique solutions to learn about biological, chemical, and even structural systems. However, when these systems exist in a highly scattering or turbid medium, the optical scattering effects reduce the effectiveness of these methods. In this article, we demonstrate a method to engineer the geometry of the optical interface of a turbid medium, thereby drastically enhancing the coupling efficiency of light into the material. This enhanced optical coupling means that light incident on the material will penetrate deeper into (and through) the medium. It also means that light thus injected into the material will have an enhanced interaction time with particles contained within the material. These results show that, by using the multiple scattering of light in a turbid medium, enhanced light-matter interaction can be achieved; this has a direct impact on spectroscopic methods such as Raman scattering and fluorescence detection in highly scattering regimes. Furthermore, the enhanced penetration depth achieved by this method will directly impact optical techniques that have previously been limited by the inability to deposit sufficient amounts of optical energy below or through highly scattering layers.
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Affiliation(s)
- Jonathan V Thompson
- Institute for Quantum Science and Engineering, Texas A&M University, College Station, TX 77843
| | - Brett H Hokr
- Institute for Quantum Science and Engineering, Texas A&M University, College Station, TX 77843
| | - Wihan Kim
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843
| | - Charles W Ballmann
- Institute for Quantum Science and Engineering, Texas A&M University, College Station, TX 77843
| | - Brian E Applegate
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843
| | - Javier Jo
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843
| | - Alexey Yamilov
- Department of Physics, Missouri University of Science & Technology, Rolla, MO 65409
| | - Hui Cao
- Department of Applied Physics, Yale University, New Haven, CT 06520
| | - Marlan O Scully
- Institute for Quantum Science and Engineering, Texas A&M University, College Station, TX 77843;
- Department of Physics, Baylor University, Waco, TX 76798
| | - Vladislav V Yakovlev
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843
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19
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Shi X, Chang Q, Tong J, Feng Y, Wang Z, Liu D. Temporal profiles for measuring threshold of random lasers pumped by ns pulses. Sci Rep 2017; 7:5325. [PMID: 28706235 PMCID: PMC5509694 DOI: 10.1038/s41598-017-05513-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 05/30/2017] [Indexed: 11/16/2022] Open
Abstract
The working threshold is an important parameter to assess the performance of cavity-free random lasers. Here, the temporal profile measurement is proposed as an alternative method to determine the thresholds of the surface plasmon based random lasers pumped by ns pulses based on analyzing the delay time (t Delay) and rising time (t R) of the emission signal. The obvious and slight inflection points of the curves of t Delay and t R varying with the pump power density are observed as indicators for the thresholds of random lasing and for the transition of lasing mode, respectively. The proposed method supplies consistent values to those supplied by traditional methods in frequency-domain for the random systems with different gain length. The demonstrated temporal profile approaches are free from the spectrometers and may be as a candidate for measuring the threshold of random lasers in ultrafast optics, nonlinear optics and bio-compatible optoelectronic probes.
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Affiliation(s)
- Xiaoyu Shi
- Applied Optics Beijing Area Major Laboratory, Department of Physics, Beijing Normal University, Beijing, 100875, China
| | - Qing Chang
- Applied Optics Beijing Area Major Laboratory, Department of Physics, Beijing Normal University, Beijing, 100875, China
| | - Junhua Tong
- Applied Optics Beijing Area Major Laboratory, Department of Physics, Beijing Normal University, Beijing, 100875, China
| | - Yunjie Feng
- Applied Optics Beijing Area Major Laboratory, Department of Physics, Beijing Normal University, Beijing, 100875, China
| | - Zhaona Wang
- Applied Optics Beijing Area Major Laboratory, Department of Physics, Beijing Normal University, Beijing, 100875, China.
| | - Dahe Liu
- Applied Optics Beijing Area Major Laboratory, Department of Physics, Beijing Normal University, Beijing, 100875, China.
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20
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Hokr BH, Thompson JV, Bixler JN, Nodurft DT, Noojin GD, Redding B, Thomas RJ, Cao H, Rockwell BA, Scully MO, Yakovlev VV. Enabling time resolved microscopy with random Raman lasing. Sci Rep 2017; 7:44572. [PMID: 28294165 PMCID: PMC5353696 DOI: 10.1038/srep44572] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Accepted: 02/09/2017] [Indexed: 11/29/2022] Open
Abstract
Optical imaging of fast events and processes is essential for understanding dynamics of complex systems. A bright flash of illuminating light is required to acquire sufficient number of photons for superior image quality. Laser pulses can provide extreme brightness and are typically employed to achieve high temporal resolution; however, the high degree of coherence associated with the lasing process degrades the image quality with speckle formation. Random lasers are low-coherence sources of stimulated emission and do not suffer from speckle, but are rather broadband and have a relatively low output power limiting the scope of their potential applications. In this report, we demonstrate the use of random Raman lasing as a novel imaging light source with unprecedented brightness for a speckle-free and narrowband light source. We showcase the advantages of a random Raman laser to image the nanosecond scale dynamics of cavitation formation in water and quantitatively compare these images to those taken with incoherent fluorescent emission and coherent laser light as illumination source.
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Affiliation(s)
- Brett H Hokr
- Texas A&M University, College Station, TX 77843 USA.,Engility, Joint Base San Antonio, Fort Sam Houston, TX 78227, USA
| | | | - Joel N Bixler
- 711th Human Performance Wing, Human Effectiveness Directorate, Bioeffects Division, Optical Radiation Branch, Joint Base San Antonio, Fort Sam Houston, TX 78234, USA
| | | | - Gary D Noojin
- Engility, Joint Base San Antonio, Fort Sam Houston, TX 78227, USA
| | | | - Robert J Thomas
- 711th Human Performance Wing, Human Effectiveness Directorate, Bioeffects Division, Optical Radiation Branch, Joint Base San Antonio, Fort Sam Houston, TX 78234, USA
| | - Hui Cao
- Yale University, New Haven, CT 06520, USA
| | - Benjamin A Rockwell
- 711th Human Performance Wing, Human Effectiveness Directorate, Bioeffects Division, Optical Radiation Branch, Joint Base San Antonio, Fort Sam Houston, TX 78234, USA
| | - Marlan O Scully
- Texas A&M University, College Station, TX 77843 USA.,Princeton University, Princeton, NJ 08540, USA.,Baylor University, Waco, TX 76706, USA
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21
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Cançado LG, Naraghi RR, Dogariu A. Passive near-field imaging with pseudo-thermal sources. OPTICS LETTERS 2017; 42:1137-1140. [PMID: 28295067 DOI: 10.1364/ol.42.001137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We demonstrate experimentally that spurious effects caused by interference can be eliminated in passive near-field imaging by implementing a simple random illumination. We show that typical imaging artifacts are effectively eliminated when the radiation emitted by a pseudo-thermal source illuminates the sample and the scattered field is collected by an aperture probe over essentially all angles of incidence. This novel pseudo-thermal source can be easily implemented and significantly enhances the performance of passive near-field imaging.
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22
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Liew SF, Knitter S, Weiler S, Monjardin-Lopez JF, Ramme M, Redding B, Choma MA, Cao H. Intracavity frequency-doubled degenerate laser. OPTICS LETTERS 2017; 42:411-414. [PMID: 28146489 DOI: 10.1364/ol.42.000411] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We develop a green light source with low spatial coherence via intracavity frequency doubling of a solid-state degenerate laser. The second-harmonic emission supports many more transverse modes than the fundamental emission, and exhibits lower spatial coherence. A strong suppression of speckle formation is demonstrated for both fundamental and second-harmonic beams. Using the green emission for fluorescence excitation, we show the coherent artifacts are removed from the full-field fluorescence images. The high power, low spatial coherence, and good directionality make the green degenerate laser an attractive illumination source for parallel imaging and projection display.
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23
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Lobach IA, Kablukov SI, Skvortsov MI, Podivilov EV, Melkumov MA, Babin SA, Dianov EM. Narrowband random lasing in a Bismuth-doped active fiber. Sci Rep 2016; 6:30083. [PMID: 27435232 PMCID: PMC4951800 DOI: 10.1038/srep30083] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Accepted: 06/29/2016] [Indexed: 11/09/2022] Open
Abstract
Random fiber lasers operating via the Rayleigh scattering (RS) feedback attract now a great deal of attention as they generate a high-quality unidirectional laser beam with the efficiency and performance comparable and even exceeding those of fiber lasers with conventional cavities. Similar to other random lasers, both amplification and random scattering are distributed here along the laser medium being usually represented by a kilometers-long passive fiber with Raman gain. However, it is hardly possible to utilize normal gain in conventional active fibers as they are usually short and RS is negligible. Here we report on the first demonstration of the RS-based random lasing in an active fiber. This became possible due to the implementation of a new Bi-doped fiber with an increased amplification length and RS coefficient. The realized Bi-fiber random laser generates in a specific spectral region (1.42 μm) exhibiting unique features, in particular, a much narrower linewidth than that in conventional cavity of the same length, in agreement with the developed theory. Lasers of this type have a great potential for applications as Bi-doped fibers with different host compositions enable laser operation in an extremely broad range of wavelengths, 1.15–1.78 μm.
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Affiliation(s)
- Ivan A Lobach
- Institute of Automation and Electrometry SB RAS, Novosibirsk, 630090, Russia
| | - Sergey I Kablukov
- Institute of Automation and Electrometry SB RAS, Novosibirsk, 630090, Russia
| | - Mikhail I Skvortsov
- Institute of Automation and Electrometry SB RAS, Novosibirsk, 630090, Russia
| | - Evgeniy V Podivilov
- Institute of Automation and Electrometry SB RAS, Novosibirsk, 630090, Russia.,Novosibirsk State University, Novosibirsk, 630090, Russia
| | | | - Sergey A Babin
- Institute of Automation and Electrometry SB RAS, Novosibirsk, 630090, Russia.,Novosibirsk State University, Novosibirsk, 630090, Russia
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24
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Gomes ASL, Raposo EP, Moura AL, Fewo SI, Pincheira PIR, Jerez V, Maia LJQ, de Araújo CB. Observation of Lévy distribution and replica symmetry breaking in random lasers from a single set of measurements. Sci Rep 2016; 6:27987. [PMID: 27292095 PMCID: PMC4904273 DOI: 10.1038/srep27987] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 05/26/2016] [Indexed: 11/09/2022] Open
Abstract
Random lasers have been recently exploited as a photonic platform for studies of complex systems. This cross-disciplinary approach opened up new important avenues for the understanding of random-laser behavior, including Lévy-type distributions of strong intensity fluctuations and phase transitions to a photonic spin-glass phase. In this work, we employ the Nd:YBO random laser system to unveil, from a single set of measurements, the physical origin of the complex correspondence between the Lévy fluctuation regime and the replica-symmetry-breaking transition to the spin-glass phase. A novel unexpected finding is also reported: the trend to suppress the spin-glass behavior for high excitation pulse energies. The present description from first principles of this correspondence unfolds new possibilities to characterize other random lasers, such as random fiber lasers, nanolasers and small lasers, which include plasmonic-based, photonic-crystal and bio-derived nanodevices. The statistical nature of the emission provided by random lasers can also impact on their prominent use as sources for speckle-free laser imaging, which nowadays represents one of the most promising applications of random lasers, with expected progress even in cancer research.
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Affiliation(s)
- Anderson S L Gomes
- Departamento de Física, Universidade Federal de Pernambuco, 50670-901, Recife-PE, Brazil
| | - Ernesto P Raposo
- Laboratório de Física Teórica e Computacional, Departamento de Física, Universidade Federal de Pernambuco, 50670-901, Recife-PE, Brazil
| | - André L Moura
- Departamento de Física, Universidade Federal de Pernambuco, 50670-901, Recife-PE, Brazil.,Grupo de Física da Matéria Condensada, Núcleo de Ciências Exatas - NCEx, Campus Arapiraca, Universidade Federal de Alagoas, 57309-005, Arapiraca-AL, Brazil
| | - Serge I Fewo
- Laboratory of Mechanics, Department of Physics, University of Yaoundé I, Cameroon
| | - Pablo I R Pincheira
- Departamento de Física, Universidade Federal de Pernambuco, 50670-901, Recife-PE, Brazil
| | - Vladimir Jerez
- Grupo de investigación FIELDS, Universidad de Investigación y Desarrollo, Bucaramanga, Colombia
| | - Lauro J Q Maia
- Grupo Física de Materiais, Instituto de Física, Universidade Federal de Goiás, 74001-970, Goiânia-GO, Brazil
| | - Cid B de Araújo
- Departamento de Física, Universidade Federal de Pernambuco, 50670-901, Recife-PE, Brazil
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25
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Observation of Lévy distribution and replica symmetry breaking in random lasers from a single set of measurements. Sci Rep 2016. [PMID: 27292095 DOI: 10.1038/srep27987.] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Random lasers have been recently exploited as a photonic platform for studies of complex systems. This cross-disciplinary approach opened up new important avenues for the understanding of random-laser behavior, including Lévy-type distributions of strong intensity fluctuations and phase transitions to a photonic spin-glass phase. In this work, we employ the Nd:YBO random laser system to unveil, from a single set of measurements, the physical origin of the complex correspondence between the Lévy fluctuation regime and the replica-symmetry-breaking transition to the spin-glass phase. A novel unexpected finding is also reported: the trend to suppress the spin-glass behavior for high excitation pulse energies. The present description from first principles of this correspondence unfolds new possibilities to characterize other random lasers, such as random fiber lasers, nanolasers and small lasers, which include plasmonic-based, photonic-crystal and bio-derived nanodevices. The statistical nature of the emission provided by random lasers can also impact on their prominent use as sources for speckle-free laser imaging, which nowadays represents one of the most promising applications of random lasers, with expected progress even in cancer research.
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26
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Moura AL, Carreño SJM, Pincheira PIR, Fabris ZV, Maia LJQ, Gomes ASL, de Araújo CB. Tunable ultraviolet and blue light generation from Nd:YAB random laser bolstered by second-order nonlinear processes. Sci Rep 2016; 6:27107. [PMID: 27250647 PMCID: PMC4890483 DOI: 10.1038/srep27107] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Accepted: 05/11/2016] [Indexed: 11/11/2022] Open
Abstract
Ultraviolet and blue light were obtained by nonlinear frequency conversion in a random laser (RL) based on Nd0.10Y0.90Al3(BO3)4 nanocrystalline powder. RL operation at 1062 nm, due to the (4)F3/2 → (4)I11/2 transition of neodymium ions (Nd(3+)), was achieved by exciting the Nd(3+) with a tunable beam from 680 to 920 nm covering the ground state absorption transitions to the (4)F9/2, ((4)F7/2,(4)S3/2), ((4)F5/2,(2)H9/2), and (4)F3/2 states. Light from 340 to 460 nm was obtained via the second-harmonic generation of the excitation beam while tunable blue light, from 417 to 486 nm, was generated by self-sum-frequency mixing between the excitation beam and the RL emission.
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Affiliation(s)
- André L. Moura
- Grupo de Física da Matéria Condensada, Núcleo de Ciências Exatas – NCEx, Campus Arapiraca, Universidade Federal de Alagoas, 57309-005, Arapiraca-AL, Brazil
| | - Sandra J. M. Carreño
- Departamento de Física, Universidade Federal de Pernambuco, 50670-901, Recife-PE, Brazil
| | - Pablo I. R. Pincheira
- Departamento de Física, Universidade Federal de Pernambuco, 50670-901, Recife-PE, Brazil
| | - Zanine V. Fabris
- Grupo Física de Materiais, Instituto de Física, Universidade Federal de Goiás, 74001-970, Goiânia-GO, Brazil
| | - Lauro J. Q. Maia
- Grupo Física de Materiais, Instituto de Física, Universidade Federal de Goiás, 74001-970, Goiânia-GO, Brazil
| | - Anderson S. L. Gomes
- Departamento de Física, Universidade Federal de Pernambuco, 50670-901, Recife-PE, Brazil
| | - Cid B. de Araújo
- Departamento de Física, Universidade Federal de Pernambuco, 50670-901, Recife-PE, Brazil
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27
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Thompson JV, Throckmorton GA, Hokr BH, Yakovlev VV. Wavefront shaping enhanced Raman scattering in a turbid medium. OPTICS LETTERS 2016; 41:1769-72. [PMID: 27082341 DOI: 10.1364/ol.41.001769] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Spontaneous Raman scattering is a powerful tool for chemical sensing and imaging but suffers from a weak signal. In this Letter, we present an application of adaptive optics to enhance the Raman scattering signal detected through a turbid, optically thick material. This technique utilizes recent advances in wavefront shaping techniques for focusing light through a turbid media and applies them to chemical detection to achieve a signal enhancement with little sacrifice to the overall simplicity of the experimental setup. With this technique, we demonstrate an enhancement in the Raman signal from titanium dioxide particles through a highly scattering material. This technique may pave the way to label-free tracking using the optical memory effect.
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28
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Babin SA, Zlobina EA, Kablukov SI, Podivilov EV. High-order random Raman lasing in a PM fiber with ultimate efficiency and narrow bandwidth. Sci Rep 2016; 6:22625. [PMID: 26940082 PMCID: PMC4778055 DOI: 10.1038/srep22625] [Citation(s) in RCA: 101] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Accepted: 02/17/2016] [Indexed: 11/14/2022] Open
Abstract
Random Raman lasers attract now a great deal of attention as they operate in non-active turbid or transparent scattering media. In the last case, single mode fibers with feedback via Rayleigh backscattering generate a high-quality unidirectional laser beam. However, such fiber lasers have rather poor spectral and polarization properties, worsening with increasing power and Stokes order. Here we demonstrate a linearly-polarized cascaded random Raman lasing in a polarization-maintaining fiber. The quantum efficiency of converting the pump (1.05 μm) into the output radiation is almost independent of the Stokes order, amounting to 79%, 83%, and 77% for the 1(st) (1.11 μm), 2(nd) (1.17 μm) and 3(rd) (1.23 μm) order, respectively, at the polarization extinction ratio >22 dB for all orders. The laser bandwidth grows with increasing order, but it is almost independent of power in the 1-10 W range, amounting to ~1, ~2 and ~3 nm for orders 1-3, respectively. So, the random Raman laser exhibits no degradation of output characteristics with increasing Stokes order. A theory adequately describing the unique laser features has been developed. Thus, a full picture of the cascaded random Raman lasing in fibers is shown.
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Affiliation(s)
- Sergey A. Babin
- Institute of Automation and Electrometry SB RAS, Novosibirsk, 630090, Russia
- Novosibirsk State University, Novosibirsk, 630090, Russia
| | | | - Sergey I. Kablukov
- Institute of Automation and Electrometry SB RAS, Novosibirsk, 630090, Russia
| | - Evgeniy V. Podivilov
- Institute of Automation and Electrometry SB RAS, Novosibirsk, 630090, Russia
- Novosibirsk State University, Novosibirsk, 630090, Russia
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29
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Yao BC, Rao YJ, Wang ZN, Wu Y, Zhou JH, Wu H, Fan MQ, Cao XL, Zhang WL, Chen YF, Li YR, Churkin D, Turitsyn S, Wong CW. Graphene based widely-tunable and singly-polarized pulse generation with random fiber lasers. Sci Rep 2015; 5:18526. [PMID: 26687730 PMCID: PMC4685245 DOI: 10.1038/srep18526] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Accepted: 11/17/2015] [Indexed: 11/09/2022] Open
Abstract
Pulse generation often requires a stabilized cavity and its corresponding mode structure for initial phase-locking. Contrastingly, modeless cavity-free random lasers provide new possibilities for high quantum efficiency lasing that could potentially be widely tunable spectrally and temporally. Pulse generation in random lasers, however, has remained elusive since the discovery of modeless gain lasing. Here we report coherent pulse generation with modeless random lasers based on the unique polarization selectivity and broadband saturable absorption of monolayer graphene. Simultaneous temporal compression of cavity-free pulses are observed with such a polarization modulation, along with a broadly-tunable pulsewidth across two orders of magnitude down to 900 ps, a broadly-tunable repetition rate across three orders of magnitude up to 3 MHz, and a singly-polarized pulse train at 41 dB extinction ratio, about an order of magnitude larger than conventional pulsed fiber lasers. Moreover, our graphene-based pulse formation also demonstrates robust pulse-to-pulse stability and wide-wavelength operation due to the cavity-less feature. Such a graphene-based architecture not only provides a tunable pulsed random laser for fiber-optic sensing, speckle-free imaging, and laser-material processing, but also a new way for the non-random CW fiber lasers to generate widely tunable and singly-polarized pulses.
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Affiliation(s)
- B C Yao
- Key Laboratory of Optical Fiber Sensing and Communications (Education Ministry of China), University of Electronic Science and Technology of China, Chengdu 610054, China.,Mesoscopic Optics and Quantum Electronics Laboratory, University of California, Los Angeles, CA 90095, United States
| | - Y J Rao
- Key Laboratory of Optical Fiber Sensing and Communications (Education Ministry of China), University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Z N Wang
- Key Laboratory of Optical Fiber Sensing and Communications (Education Ministry of China), University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Y Wu
- Key Laboratory of Optical Fiber Sensing and Communications (Education Ministry of China), University of Electronic Science and Technology of China, Chengdu 610054, China
| | - J H Zhou
- State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - H Wu
- Key Laboratory of Optical Fiber Sensing and Communications (Education Ministry of China), University of Electronic Science and Technology of China, Chengdu 610054, China
| | - M Q Fan
- Key Laboratory of Optical Fiber Sensing and Communications (Education Ministry of China), University of Electronic Science and Technology of China, Chengdu 610054, China
| | - X L Cao
- Key Laboratory of Optical Fiber Sensing and Communications (Education Ministry of China), University of Electronic Science and Technology of China, Chengdu 610054, China
| | - W L Zhang
- Key Laboratory of Optical Fiber Sensing and Communications (Education Ministry of China), University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Y F Chen
- State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Y R Li
- State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - D Churkin
- Aston Institute of Photonic Technologies, Aston University, Birmingham, B47ET, United Kingdom.,Laboratory of Nonlinear Photonics, Novosibirsk State University, Novosibirsk, 630090 Russia.,Institute of Automation and Electrometry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia
| | - S Turitsyn
- Aston Institute of Photonic Technologies, Aston University, Birmingham, B47ET, United Kingdom.,Laboratory of Nonlinear Photonics, Novosibirsk State University, Novosibirsk, 630090 Russia
| | - C W Wong
- Mesoscopic Optics and Quantum Electronics Laboratory, University of California, Los Angeles, CA 90095, United States
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30
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Multi-wavelength emission through self-induced second-order wave-mixing processes from a Nd3+ doped crystalline powder random laser. Sci Rep 2015; 5:13816. [PMID: 26334517 PMCID: PMC4558712 DOI: 10.1038/srep13816] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Accepted: 08/07/2015] [Indexed: 11/25/2022] Open
Abstract
Random lasers (RLs) based on neodymium ions (Nd3+) doped crystalline powders rely on multiple light scattering to sustain laser oscillation. Although Stokes and anti-Stokes Nd3+ RLs have been demonstrated, the optical gain obtained up to now was possibly not large enough to produce self-frequency conversion. Here we demonstrate self-frequency upconversion from Nd3+ doped YAl3(BO3)4 monocrystals excited at 806 nm, in resonance with the Nd3+ transition 4I9/2 → 4F5/2. Besides the observation of the RL emission at 1062 nm, self-converted second-harmonic at 531 nm, and self-sum-frequency generated emission at 459 nm due to the RL and the excitation laser at 806 nm, are reported. Additionally, second-harmonic of the excitation laser at 403 nm was generated. These results exemplify the first multi-wavelength source of radiation owing to nonlinear optical effect in a Nd3+ doped crystalline powder RL. Contrary to the RLs based on dyes, this multi-wavelength light source can be used in photonic devices due to the large durability of the gain medium.
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31
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Thompson J, Hokr B, Yakovlev V. Optimization of focusing through scattering media using the continuous sequential algorithm. JOURNAL OF MODERN OPTICS 2015; 63:80-84. [PMID: 27018179 PMCID: PMC4803298 DOI: 10.1080/09500340.2015.1073804] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The ability to control the propagation of light through scattering media is essential for atmospheric optics, astronomy, biomedical imaging and remote sensing. The optimization of focusing light through a scattering medium is of particular interest for the case of highly scattering materials. Optical wavefront beam-shaping plays a critical role in optimizing such a propagation; however, an enormous field of adjustable parameters makes the overall task complicated. Here, we propose and experimentally evaluate several variations on the standard continuous sequential algorithm that hold a promise of revealing new, faster and more efficient optimization algorithms for selecting an optical wavefront to focus light through a scattering medium. We demonstrate that the order in which pixels are chosen in the continuous sequential algorithm can lead to a 2-fold decrease in the number of iterations required to reach a given enhancement.
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32
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Hokr BH, Bixler JN, Elpers G, Zollars B, Thomas RJ, Yakovlev VV, Scully MO. Modeling focusing Gaussian beams in a turbid medium with Monte Carlo simulations. OPTICS EXPRESS 2015; 23:8699-705. [PMID: 25968708 DOI: 10.1364/oe.23.008699] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Monte Carlo techniques are the gold standard for studying light propagation in turbid media. Traditional Monte Carlo techniques are unable to include wave effects, such as diffraction; thus, these methods are unsuitable for exploring focusing geometries where a significant ballistic component remains at the focal plane. Here, a method is presented for accurately simulating photon propagation at the focal plane, in the context of a traditional Monte Carlo simulation. This is accomplished by propagating ballistic photons along trajectories predicted by Gaussian optics until they undergo an initial scattering event, after which, they are propagated through the medium by a traditional Monte Carlo technique. Solving a known problem by building upon an existing Monte Carlo implementation allows this method to be easily implemented in a wide variety of existing Monte Carlo simulations, greatly improving the accuracy of those models for studying dynamics in a focusing geometry.
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33
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Churkin DV, Kolokolov IV, Podivilov EV, Vatnik ID, Nikulin MA, Vergeles SS, Terekhov IS, Lebedev VV, Falkovich G, Babin SA, Turitsyn SK. Wave kinetics of random fibre lasers. Nat Commun 2015; 2:6214. [PMID: 25645177 PMCID: PMC4347200 DOI: 10.1038/ncomms7214] [Citation(s) in RCA: 98] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Accepted: 01/06/2015] [Indexed: 11/09/2022] Open
Abstract
Traditional wave kinetics describes the slow evolution of systems with many degrees of freedom to equilibrium via numerous weak non-linear interactions and fails for very important class of dissipative (active) optical systems with cyclic gain and losses, such as lasers with non-linear intracavity dynamics. Here we introduce a conceptually new class of cyclic wave systems, characterized by non-uniform double-scale dynamics with strong periodic changes of the energy spectrum and slow evolution from cycle to cycle to a statistically steady state. Taking a practically important example-random fibre laser-we show that a model describing such a system is close to integrable non-linear Schrödinger equation and needs a new formalism of wave kinetics, developed here. We derive a non-linear kinetic theory of the laser spectrum, generalizing the seminal linear model of Schawlow and Townes. Experimental results agree with our theory. The work has implications for describing kinetics of cyclical systems beyond photonics.
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Affiliation(s)
- D V Churkin
- Aston Institute of Photonic Technologies, Aston University, Birmingham, B4 7ET, UK. .,Institute of Automation and Electrometry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia. .,Novosibirsk State University, Novosibirsk, 630090, Russia.
| | - I V Kolokolov
- Landau Institute for Theoretical Physics, Russian Academy of Sciences, Chernogolovka, 142432, Russia.,Moscow Institute of Physics and Technology, Dolgoprudny, 141700, Russia
| | - E V Podivilov
- Institute of Automation and Electrometry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia.,Novosibirsk State University, Novosibirsk, 630090, Russia
| | - I D Vatnik
- Institute of Automation and Electrometry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia.,Novosibirsk State University, Novosibirsk, 630090, Russia
| | - M A Nikulin
- Institute of Automation and Electrometry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia
| | - S S Vergeles
- Landau Institute for Theoretical Physics, Russian Academy of Sciences, Chernogolovka, 142432, Russia.,Moscow Institute of Physics and Technology, Dolgoprudny, 141700, Russia
| | - I S Terekhov
- Novosibirsk State University, Novosibirsk, 630090, Russia.,The Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia
| | - V V Lebedev
- Landau Institute for Theoretical Physics, Russian Academy of Sciences, Chernogolovka, 142432, Russia.,Moscow Institute of Physics and Technology, Dolgoprudny, 141700, Russia
| | - G Falkovich
- Weizmann Institute of Science, Rehovot, 76100, Israel.,Institute for Information Transmission Problems, Moscow, 127994, Russia
| | - S A Babin
- Institute of Automation and Electrometry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia.,Novosibirsk State University, Novosibirsk, 630090, Russia
| | - S K Turitsyn
- Aston Institute of Photonic Technologies, Aston University, Birmingham, B4 7ET, UK.,Novosibirsk State University, Novosibirsk, 630090, Russia
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34
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Hokr BH, Bixler JN, Yakovlev VV. Higher order processes in random Raman lasing. APPLIED PHYSICS. A, MATERIALS SCIENCE & PROCESSING 2014; 117:681-685. [PMID: 25395737 PMCID: PMC4226537 DOI: 10.1007/s00339-014-8722-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Random Raman lasers offer a unique opportunity to study many exciting dynamics of light propagation in turbid media. One of the most notable features observed to exist in the recently discovered random Raman laser are the presence of higher order stimulated Raman scattering (SRS) processes. The higher order Stokes generation likely comes from photons that have the longest pathlengths, thus have the most gain. This makes these photons particularly likely to offer interesting insight into wave propagation effects such as coherent backscattering and optical Anderson localization. In this work, we use Monte Carlo simulations to investigate how these higher order processes occur and what properties they are expected to exhibit when considering only transport equation dynamics. This knowledge will allow us to look for deviations from this theory in future experiments to determine if wavelike properties play an active role in random Raman lasing.
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35
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Single-shot stand-off chemical identification of powders using random Raman lasing. Proc Natl Acad Sci U S A 2014; 111:12320-4. [PMID: 25114231 DOI: 10.1073/pnas.1412535111] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The task of identifying explosives, hazardous chemicals, and biological materials from a safe distance is the subject we consider. Much of the prior work on stand-off spectroscopy using light has been devoted to generating a backward-propagating beam of light that can be used drive further spectroscopic processes. The discovery of random lasing and, more recently, random Raman lasing provide a mechanism for remotely generating copious amounts of chemically specific Raman scattered light. The bright nature of random Raman lasing renders directionality unnecessary, allowing for the detection and identification of chemicals from large distances in real time. In this article, the single-shot remote identification of chemicals at kilometer-scale distances is experimentally demonstrated using random Raman lasing.
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