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Zhong Z, Zhang L, Guo X, Zhang J, Zhu M, Pang F, Wang T. Observation and all-optical manipulation of replica symmetry breaking dynamics in a multi-Stokes-involved Brillouin random fiber laser photonic system. OPTICS EXPRESS 2024; 32:18639-18649. [PMID: 38859015 DOI: 10.1364/oe.523146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Accepted: 04/24/2024] [Indexed: 06/12/2024]
Abstract
In this paper, we propose and demonstrate an all-optical control of RSB transition in a multi-wavelength Brillouin random fiber laser (MWBRFL). Multi-order Stokes light components can be subsequently generated by increasing the power of the Erbium-doped fiber amplifier (EDFA) inside the MWBRFL, providing additional disorder as well as multiple Stokes-involved interplay. It essentially allows diversified laser mode landscapes with adjustable average mode lifetime and random mode density of the 1st order Stokes, which benefits the switching between replica symmetry breaking (RSB) and replica symmetry (RS) states in an optically controlled manner. Results show that the average mode lifetime of the 1st order Stokes component gradually decreases from 250.0 ms to 1.2 ms as high orders from the 2nd to the 5th of Stokes components are activated. Meanwhile, the order parameter q of the 1st order Stokes random lasing emission presents distinct statistical distributions within the selective sub-window under various EDFA optical powers. Consequently, all-optical dynamical control of the 1st Stokes random laser mode landscapes with adjustable average mode lifetime turns out to be attainable, facilitating the RSB transition under an appropriate observation time window. These findings open a new avenue for exploring the underlying physical mechanisms behind the occurrence of the RSB phenomenon in photonic complex systems.
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2
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Dey A, Pramanik A, Mondal K, Biswas S, Chatterjee U, Messina F, Kumbhakar P. Replica symmetry breaking in a colloidal plasmonic random laser with gold-coated triangular silver nanostructures. OPTICS LETTERS 2023; 48:4141-4144. [PMID: 37527138 DOI: 10.1364/ol.493987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 07/03/2023] [Indexed: 08/03/2023]
Abstract
Plasmonic random lasers have drawn significant attention recently due to their versatility, low threshold, and the possibility of achieving tunable and coherent/incoherent outputs. However, in this Letter, the phenomenon of replica symmetry breaking is reported in intensity fluctuations of a rarely used colloidal plasmonic random laser (RL) illumination. Triangular nanosilver scatter particles produced incoherent RL action when used in a dimethylformamide (DMF) environment in a Rhodamine-6G gain medium. The use of gold-coated triangular nanosilver as the scatterer in place of triangular nanosilver offered a dual contribution of scattering and lower photo-reabsorption, which caused a reduction in the lasing threshold energy of 39% compared to that obtained with the latter. Further, due to its long-term photostability and chemical properties, a phase transition from the photonic paramagnetic to the glassy phase is observed experimentally in the RL system used. Interestingly, the transition occurs at approximately the lasing threshold value, which is a consequence of stronger correlation of modal behaviors at high input pump energies.
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3
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Coronel ED, da Silva-Neto ML, Moura AL, González IRR, Pugina RS, Hilário EG, da Rocha EG, Caiut JMA, Gomes ASL, Raposo EP. Simultaneous evaluation of intermittency effects, replica symmetry breaking and modes dynamics correlations in a Nd:YAG random laser. Sci Rep 2022; 12:1051. [PMID: 35058511 PMCID: PMC8776975 DOI: 10.1038/s41598-022-05090-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 11/10/2021] [Indexed: 11/09/2022] Open
Abstract
Random lasers (RLs) are remarkable experimental platforms to advance the understanding of complex systems phenomena, such as the replica-symmetry-breaking (RSB) spin glass phase, dynamics modes correlations, and turbulence. Here we study these three phenomena jointly in a Nd:YAG based RL synthesized for the first time using a spray pyrolysis method. We propose a couple of modified Pearson correlation coefficients that are simultaneously sensitive to the emergence and fading out of photonic intermittency turbulent-like effects, dynamics evolution of modes correlations, and onset of RSB behavior. Our results show how intertwined these phenomena are in RLs, and suggest that they might share some common underlying mechanisms, possibly approached in future theoretical models under a unified treatment.
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Grants
- 2016/11670-5, Proc. 2019/18828-1 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
- Finance Code 001 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
- J.M.A.C. (305841/2018-1), R.S.P., E.P.R. (305062/2017-4), A.S.L.G. (310445/2020-5) Conselho Nacional de Desenvolvimento Científico e Tecnológico
- J.M.A.C. (305841/2018-1), R.S.P., E.P.R. (305062/2017-4), A.S.L.G. (310445/2020-5) Conselho Nacional de Desenvolvimento Científico e Tecnológico
- J.M.A.C. (305841/2018-1), R.S.P., E.P.R. (305062/2017-4), A.S.L.G. (310445/2020-5) Conselho Nacional de Desenvolvimento Científico e Tecnológico
- APQ-0504-1.05/14, APQ-0602-1.05/14 Fundação de Amparo a Ciência e Tecnologia do Estado de Pernambuco (FACEPE)
- APQ-0504-1.05/14, APQ-0602-1.05/14 Fundação de Amparo a Ciência e Tecnologia do Estado de Pernambuco (FACEPE)
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Affiliation(s)
- Edwin D Coronel
- Departamento de Física, Universidade Federal de Pernambuco, Recife, PE, 50670-901, Brazil
| | - Manoel L da Silva-Neto
- Graduate Program in Materials Science, Universidade Federal de Pernambuco, Recife, PE, 50670-901, Brazil
| | - André L Moura
- Grupo de Física da Matéria Condensada, Núcleo de Ciências Exatas-NCEx, Universidade Federal de Alagoas, Campus Arapiraca, Arapiraca, AL, 57309-005, Brazil
| | - Iván R R González
- Laboratório de Física Teórica e Computacional, Departamento de Física, Universidade Federal de Pernambuco, Recife, PE, 50670-901, Brazil
- Unidade Acadêmica de Belo Jardim, Universidade Federal Rural de Pernambuco, Belo Jardim, PE, 55156-580, Brazil
| | - Roberta S Pugina
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Prêto, SP, 14040-901, Brazil
| | - Eloísa G Hilário
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Prêto, SP, 14040-901, Brazil
| | - Euzane G da Rocha
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Prêto, SP, 14040-901, Brazil
| | - José Maurício A Caiut
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Prêto, SP, 14040-901, Brazil.
| | - Anderson S L Gomes
- Departamento de Física, Universidade Federal de Pernambuco, Recife, PE, 50670-901, Brazil
| | - Ernesto P Raposo
- Laboratório de Física Teórica e Computacional, Departamento de Física, Universidade Federal de Pernambuco, Recife, PE, 50670-901, Brazil
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4
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Sarkar A, Bhaktha BNS, Andreasen J. Replica Symmetry Breaking in a Weakly Scattering Optofluidic Random Laser. Sci Rep 2020; 10:2628. [PMID: 32060490 PMCID: PMC7021834 DOI: 10.1038/s41598-020-59575-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 01/14/2020] [Indexed: 12/03/2022] Open
Abstract
We report the observation of replica symmetry breaking (RSB) in a weakly scattering optofluidic random laser (ORL). Coherent random lasing is indicated by the presence of narrow peaks rising out of the spectral background. This coherence helps to identify a random laser threshold, which is expected to be gradual with weak scattering. We find that lasing action initiated using optical pulsed pumping coincides with the onset of both RSB and Lévy flight statistics. However, the transition from the photonic paramagnetic to photonic glass phase is more subtle in that the Parisi overlap function broadens instead of completely changing shape. This subtlety is balanced by an accompanying result of identical experimental conditions giving rise to lasing or no lasing depending on the shot. Additional statistical calculations and investigations into the fundamental physical mechanisms present in the ORL support this conclusion. Using simple numerical models, we study the critical spectral properties required for RSB to occur, as indicated by the Parisi overlap function. The simplicity of the models helps demonstrate the sensitive nature of this tool and the necessity of additional verification of the physical mechanisms present in the experiment.
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Affiliation(s)
- Anirban Sarkar
- Department of Physics, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India. .,Université Grenoble Alpes, Laboratoire Interdisciplinaire de Physique, F-38000, Grenoble, France.
| | - B N Shivakiran Bhaktha
- Department of Physics, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
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5
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Tehranchi A, Kashyap R. Theoretical investigations of power fluctuations statistics in Brillouin erbium-doped fiber lasers. OPTICS EXPRESS 2019; 27:37508-37515. [PMID: 31878529 DOI: 10.1364/oe.27.037508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 12/01/2019] [Indexed: 06/10/2023]
Abstract
We present theoretical investigations including simulations and statistical analyses on the fluctuations of the temporal output power in a Brillouin erbium-doped fiber laser. The generation of even Stokes waves up to the 5th order is considered by solving coupled-mode equations including SBS and Kerr nonlinearities. It is demonstrated that by increasing the EDFA pump power and generating a few orders of Stokes waves in such a laser, there are strong power fluctuations and rogue events are expected. Transition from Gaussian-like to levy-like regime is described as the power is increased from threshold resulting in the initial Stokes wave generation to well beyond threshold generating 5 effective even Stokes waves. Accordingly, phase portraits confirm increasing fluctuations as a function of the power. It is also shown that at the SBS lasing threshold, the output signals have the maximum correlation over replicas in round trips, nevertheless by enhancing the power, the correlation diminishes, which results in a full symmetry breaking and the system radiates in a chaotic manner and exhibits random laser behavior.
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6
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Pierangeli D, Marcucci G, Conti C. Large-Scale Photonic Ising Machine by Spatial Light Modulation. PHYSICAL REVIEW LETTERS 2019; 122:213902. [PMID: 31283311 DOI: 10.1103/physrevlett.122.213902] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 03/29/2019] [Indexed: 05/20/2023]
Abstract
Quantum and classical physics can be used for mathematical computations that are hard to tackle by conventional electronics. Very recently, optical Ising machines have been demonstrated for computing the minima of spin Hamiltonians, paving the way to new ultrafast hardware for machine learning. However, the proposed systems are either tricky to scale or involve a limited number of spins. We design and experimentally demonstrate a large-scale optical Ising machine based on a simple setup with a spatial light modulator. By encoding the spin variables in a binary phase modulation of the field, we show that light propagation can be tailored to minimize an Ising Hamiltonian with spin couplings set by input amplitude modulation and a feedback scheme. We realize configurations with thousands of spins that settle in the ground state in a low-temperature ferromagneticlike phase with all-to-all and tunable pairwise interactions. Our results open the route to classical and quantum photonic Ising machines that exploit light spatial degrees of freedom for parallel processing of a vast number of spins with programmable couplings.
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Affiliation(s)
- D Pierangeli
- Dipartimento di Fisica, Università di Roma "La Sapienza," P.le Aldo Moro 5, 00185 Rome, Italy
- Institute for Complex Systems, National Research Council (ISC-CNR), Via dei Taurini 19, 00185 Rome, Italy
| | - G Marcucci
- Dipartimento di Fisica, Università di Roma "La Sapienza," P.le Aldo Moro 5, 00185 Rome, Italy
- Institute for Complex Systems, National Research Council (ISC-CNR), Via dei Taurini 19, 00185 Rome, Italy
| | - C Conti
- Dipartimento di Fisica, Università di Roma "La Sapienza," P.le Aldo Moro 5, 00185 Rome, Italy
- Institute for Complex Systems, National Research Council (ISC-CNR), Via dei Taurini 19, 00185 Rome, Italy
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7
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Raposo EP, González IRR, Macêdo AMS, Lima BC, Kashyap R, Menezes LDS, Gomes ASL. Evidence of a Floquet Phase in a Photonic System. PHYSICAL REVIEW LETTERS 2019; 122:143903. [PMID: 31050490 DOI: 10.1103/physrevlett.122.143903] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 01/26/2019] [Indexed: 05/22/2023]
Abstract
The ground breaking extension of the key concept of phase structure to nonequilibrium regimes was only recently achieved in Floquet systems, characterized by a time-dependent quantum Hamiltonian with a periodic driving source. However, despite the theoretical advances, only very few systems are known to display experimental Floquet phases, not one of them employing a laser emission-based mechanism. Here we report the first experimental observation of a Floquet phase in a photonic system, a disordered fiber laser with spatial eigenmode localization. We apply a periodically oscillating cw pumping source that drives the random couplings of the Floquet Hamiltonian. A photonic Floquet spin-glass phase is demonstrated in the random-lasing regime by extensive measurements of the Parisi overlap parameter and asymmetry properties of its distribution. In contrast, in the fluorescent regime below threshold, the absence of mode localization prevents the stabilization of a Floquet phase. Our results are nicely described by theoretical arguments.
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Affiliation(s)
- Ernesto P Raposo
- Laboratório de Física Teórica e Computacional, Departamento de Física, Universidade Federal de Pernambuco, 50670-901 Recife, Pernambuco, Brazil
| | - Iván R R González
- Laboratório de Física Teórica e Computacional, Departamento de Física, Universidade Federal de Pernambuco, 50670-901 Recife, Pernambuco, Brazil
| | - A M S Macêdo
- Laboratório de Física Teórica e Computacional, Departamento de Física, Universidade Federal de Pernambuco, 50670-901 Recife, Pernambuco, Brazil
| | - Bismarck C Lima
- Departamento de Física, Universidade Federal de Pernambuco, 50670-901 Recife, Pernambuco, Brazil
| | - Raman Kashyap
- Fabulas Laboratory, Department of Engineering Physics, Department of Electrical Engineering, Polytechnique Montreal, Montreal, H3C 3A7, Quebec, Canada
| | - Leonardo de S Menezes
- Departamento de Física, Universidade Federal de Pernambuco, 50670-901 Recife, Pernambuco, Brazil
| | - Anderson S L Gomes
- Departamento de Física, Universidade Federal de Pernambuco, 50670-901 Recife, Pernambuco, Brazil
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8
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Coexistence of turbulence-like and glassy behaviours in a photonic system. Sci Rep 2018; 8:17046. [PMID: 30451950 PMCID: PMC6242991 DOI: 10.1038/s41598-018-35434-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 11/05/2018] [Indexed: 11/09/2022] Open
Abstract
Coexistence of physical phenomena can occur in quite unexpected ways. Here we demonstrate the first evidence in any physical system of the coexistence in the same set of measurements of two of the most challenging phenomena in complex systems: turbulence and spin glasses. We employ a quasi-one-dimensional random fibre laser, which displays all essential ingredients underlying both behaviours, namely disorder, frustration and nonlinearity, as well as turbulent energy cascades and intermittent energy flux between fluctuation scales. Our extensive experimental results are theoretically supported by a newly defined photonic Pearson correlation coefficient that unveils the role of the intermittency and describes remarkably well both the spin-glass Parisi overlap parameter and the distribution of turbulent-like intensity increments. Our findings open the way to unravel subtle connections with other complex phenomena, such as disordered nonlinear wave propagation, Lévy statistics of intensity fluctuations, and rogue waves.
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9
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Pierangeli D, Tavani A, Di Mei F, Agranat AJ, Conti C, DelRe E. Observation of replica symmetry breaking in disordered nonlinear wave propagation. Nat Commun 2017; 8:1501. [PMID: 29142262 PMCID: PMC5688108 DOI: 10.1038/s41467-017-01612-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 10/03/2017] [Indexed: 11/18/2022] Open
Abstract
A landmark of statistical mechanics, spin-glass theory describes critical phenomena in disordered systems that range from condensed matter to biophysics and social dynamics. The most fascinating concept is the breaking of replica symmetry: identical copies of the randomly interacting system that manifest completely different dynamics. Replica symmetry breaking has been predicted in nonlinear wave propagation, including Bose-Einstein condensates and optics, but it has never been observed. Here, we report the experimental evidence of replica symmetry breaking in optical wave propagation, a phenomenon that emerges from the interplay of disorder and nonlinearity. When mode interaction dominates light dynamics in a disordered optical waveguide, different experimental realizations are found to have an anomalous overlap intensity distribution that signals a transition to an optical glassy phase. The findings demonstrate that nonlinear propagation can manifest features typical of spin-glasses and provide a novel platform for testing so-far unexplored fundamental physical theories for complex systems.
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Affiliation(s)
- Davide Pierangeli
- Dipartimento di Fisica, Università di Roma "La Sapienza", 00185, Rome, Italy.
| | - Andrea Tavani
- Dipartimento di Fisica, Università di Roma "La Sapienza", 00185, Rome, Italy
| | - Fabrizio Di Mei
- Dipartimento di Fisica, Università di Roma "La Sapienza", 00185, Rome, Italy
| | - Aharon J Agranat
- Applied Physics Department, Hebrew University of Jerusalem, 91904, Jerusalem, Israel
| | - Claudio Conti
- Dipartimento di Fisica, Università di Roma "La Sapienza", 00185, Rome, Italy
- Institute for Complex Systems, ISC-CNR, 00185, Rome, Italy
| | - Eugenio DelRe
- Dipartimento di Fisica, Università di Roma "La Sapienza", 00185, Rome, Italy
- Institute for Complex Systems, ISC-CNR, 00185, Rome, Italy
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10
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Moura AL, Pincheira PIR, Reyna AS, Raposo EP, Gomes ASL, de Araújo CB. Replica Symmetry Breaking in the Photonic Ferromagneticlike Spontaneous Mode-Locking Phase of a Multimode Nd:YAG Laser. PHYSICAL REVIEW LETTERS 2017; 119:163902. [PMID: 29099224 DOI: 10.1103/physrevlett.119.163902] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2016] [Indexed: 06/07/2023]
Abstract
We demonstrate the replica symmetry breaking (RSB) phenomenon in the spontaneous mode-locking regime of a multimode Q-switched Nd:YAG laser. The underlying mechanism is quite distinct from that of the RSB recently observed in random lasers. Here, there is no random medium and the phase is not glassy with incoherently oscillating modes as in random lasers. Instead, in each pulse a specific subset of longitudinal modes are activated in a nondeterministic way, whose coherent oscillation dominates and frustrates the others. The emergence of RSB coincides with the onset of ultrashort pulse generation typical of the spontaneous mode-locking regime, both occurring at the laser threshold. On the other hand, when high losses are introduced, RSB is inhibited and only the amplified stimulated emission with replica symmetry is observed. Our results disclose the only theoretically predicted photonic phase with RSB that remained unobserved so far.
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Affiliation(s)
- André L Moura
- Departamento de Física, Universidade Federal de Pernambuco, 50670-901 Recife, Pernambuco, Brazil
- Grupo de Física da Matéria Condensada, Núcleo de Ciências Exatas-NCEx, Campus Arapiraca, Universidade Federal de Alagoas, 57309-005 Arapiraca, Alagoas, Brazil
| | - Pablo I R Pincheira
- Departamento de Física, Universidade Federal de Pernambuco, 50670-901 Recife, Pernambuco, Brazil
| | - Albert S Reyna
- Departamento de Física, Universidade Federal de Pernambuco, 50670-901 Recife, Pernambuco, Brazil
| | - Ernesto P Raposo
- Laboratório de Física Teórica e Computacional, Departamento de Física, Universidade Federal de Pernambuco, 50670-901 Recife, Pernambuco, Brazil
| | - Anderson S L Gomes
- Departamento de Física, Universidade Federal de Pernambuco, 50670-901 Recife, Pernambuco, Brazil
| | - Cid B de Araújo
- Departamento de Física, Universidade Federal de Pernambuco, 50670-901 Recife, Pernambuco, Brazil
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11
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Parafiniuk K, Monnereau C, Sznitko L, Mettra B, Zelechowska M, Andraud C, Miniewicz A, Mysliwiec J. Distributed Feedback Lasing in Amorphous Polymers with Covalently Bonded Fluorescent Dyes: The Influence of Photoisomerization Process. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00878] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kacper Parafiniuk
- Advanced
Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Cyrille Monnereau
- ENS
de Lyon, CNRS UMR 5182, Université Lyon 1, Laboratoire de Chimie, Univ Lyon, F69342 Lyon, France
| | - Lech Sznitko
- Advanced
Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Bastien Mettra
- ENS
de Lyon, CNRS UMR 5182, Université Lyon 1, Laboratoire de Chimie, Univ Lyon, F69342 Lyon, France
| | - Monika Zelechowska
- Advanced
Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Chantal Andraud
- ENS
de Lyon, CNRS UMR 5182, Université Lyon 1, Laboratoire de Chimie, Univ Lyon, F69342 Lyon, France
| | - Andrzej Miniewicz
- Advanced
Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Jaroslaw Mysliwiec
- Advanced
Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
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12
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Tommasi F, Ignesti E, Lepri S, Cavalieri S. Robustness of replica symmetry breaking phenomenology in random laser. Sci Rep 2016; 6:37113. [PMID: 27849029 PMCID: PMC5111062 DOI: 10.1038/srep37113] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 10/25/2016] [Indexed: 11/09/2022] Open
Abstract
Random lasers are optical sources where light is amplified by stimulated emission along random paths through an amplifying scattering medium. Connections between their physics and the one of quenched disordered nonlinear systems, notably spin glasses, have been recently suggested. Here we report a first experimental study of correlations of spectral fluctuations intensity in a random laser medium where the scatterers displacement significantly changes among consecutive shots. Remarkably, our results reveal that the replica symmetry breaking (RSB) phenomenology is robust with respect to an averaging over different realizations of the disorder. Moreover, besides opening new intriguing questions about the understanding of such a phenomenon, this work aims to clarify the connection between the RSB with the onset of the Lévy regime, i.e. the fluctuations regime that is a peculiar feature of the random lasing under critical conditions. Our results suggest that the former occurs independently of the latter and then the RSB phenomenology is a generic feature linked to the random laser threshold.
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Affiliation(s)
- Federico Tommasi
- Dipartimento di Fisica e Astronomia, Università di Firenze, Via G. Sansone 1 I-50019 Sesto Fiorentino, Italy
| | - Emilio Ignesti
- Dipartimento di Fisica e Astronomia, Università di Firenze, Via G. Sansone 1 I-50019 Sesto Fiorentino, Italy
| | - Stefano Lepri
- Istituto dei Sistemi Complessi, Consiglio Nazionale delle Ricerche, via Madonna del Piano 10, I-50019 Sesto Fiorentino, Italy
| | - Stefano Cavalieri
- Dipartimento di Fisica e Astronomia, Università di Firenze, Via G. Sansone 1 I-50019 Sesto Fiorentino, Italy
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