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Hary M, Salmela L, Ryczkowski P, Gallazzi F, Dudley JM, Genty G. Tailored supercontinuum generation using genetic algorithm optimized Fourier domain pulse shaping. OPTICS LETTERS 2023; 48:4512-4515. [PMID: 37656541 DOI: 10.1364/ol.492064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 06/14/2023] [Indexed: 09/03/2023]
Abstract
We report the generation of a spectrally tailored supercontinuum using Fourier-domain pulse shaping of femtosecond pulses injected into a highly nonlinear fiber controlled by a genetic algorithm. User-selectable spectral enhancement is demonstrated over the 1550-2000-nm wavelength range, with the ability to both select a channel with target central wavelength and bandwidth in the range of 1-5 nm. The spectral enhancement factor relative to unshaped input pulses is typically ∼5-20 in the range 1550-1800 nm and increases for longer wavelengths, exceeding a factor of 160 around 2000 nm. We also demonstrate results where the genetic algorithm is applied to the enhancement of up to four spectral channels simultaneously.
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Eilkaer Hansen R, Meldgaard Moltke A, Bang O. High-power supercontinuum lasers with a flat blue spectrum through pump modulation: a numerical study. OPTICS LETTERS 2023; 48:1574-1577. [PMID: 37221713 DOI: 10.1364/ol.485130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 02/23/2023] [Indexed: 05/25/2023]
Abstract
We numerically investigate high-power, modulational instability-based supercontinuum sources. Such sources have spectra that reach the infrared material absorption edge and as a result the spectrum has a strong narrow blue peak (dispersive wave group velocity matched to solitons at the infrared loss edge) followed by a significant dip in the neighboring longer-wavelength region. In a wide range of applications one prefers a broader and more flat blue part within a certain minimum and maximum power spectral density. From the perspective of fiber degradation it would be desirable to achieve this at reduced pump peak powers. We show that it is possible to improve the flatness by more than a factor of 3 by modulating the input peak power, although this comes at the expense of slightly higher relative intensity noise. Specifically, we consider a standard 6.6 W, 80 MHz supercontinuum source with a 455 nm blue edge, which uses 7 ps pump pulses. We then modulate its peak power to generate a pump pulse train having two and three different sub-pulses.
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Lee KF, Rolland A, Li P, Jiang J, Fermann ME. Coherent supercontinuum shaping for multiple wavelength optimization over an octave. OPTICS EXPRESS 2022; 30:427-435. [PMID: 35201219 DOI: 10.1364/oe.445586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 12/12/2021] [Indexed: 06/14/2023]
Abstract
We shape the spectrum of an octave spanning supercontinuum from an erbium fiber laser. The group delay dispersion is controlled through the temperature profile of a chirped fiber Bragg grating. We demonstrate control of spectral broadening, switching in spectral windows, and optimizing power at six wavelengths corresponding to Yb, Ca, and Sr clock transitions, an f-2f pair, and a C-band reference for frequency transfer applications. We verify locking of the shaped f-2f beat note, and the coherence of the shaped supercontinuum by interference with an unshaped supercontinuum branch with relative frequency deviation of 10-17 at 1 s averaging time.
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Hortholary T, Carrion C, Chouzenoux E, Pesquet JC, Lefort C. Multiplex-multiphoton microscopy and computational strategy for biomedical imaging. Microsc Res Tech 2021; 84:1553-1562. [PMID: 33491837 DOI: 10.1002/jemt.23712] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 12/21/2020] [Accepted: 12/29/2020] [Indexed: 01/22/2023]
Abstract
We demonstrate the benefit of a novel laser strategy in multiphoton microscopy (MPM). The cheap, simple, and turn-key supercontinuum laser system with its spectral shaping module, constitutes an ideal approach for the one-shot microscopic imaging of many fluorophores without modification of the excitation parameters: central wavelength, spectral bandwidth, and average power. The polyvalence of the resulting multiplex-multiphoton microscopy (M-MPM) device is illustrated by images of many biomedical models from several origins (biological, medical, or vegetal), generated while keeping constant the spectral parameters of excitation. The resolution of the M-MPM device is quantified by a procedure of point-spread-function (PSF) assessment led by an original, robust, and reliable computational approach FIGARO. The estimated values for the PSF width for our M-MPM system are shown to be comparable to standard values found in optical microscopy. The simplification of the excitation system constitutes a significant instrumental progress in biomedical MPM, paving the way to the imaging of many fluorophores with a single shot of excitation without any modification of the lighting device. RESEARCH HIGHLIGHTS: A new solution of multiplex-multiphoton microscopy device is shown, resting on a supercontinuum laser. The one-shot excitation device has imaged biomedical and vegetal models. Our original computational strategy measures usual microscopy resolution.
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Affiliation(s)
- Thomas Hortholary
- CNRS UMR 7252, XLIM Research Institute, Université de Limoges, Limoges, France.,ENS Cachan, Cachan, France
| | - Claire Carrion
- BISCEm, Microscopy core Facility Université de Limoges, Limoges, France
| | - Emilie Chouzenoux
- Center for Visual Computing, CentraleSupélec, INRIA Saclay, Université Paris-Saclay, Limoges, France
| | - Jean-Christophe Pesquet
- Center for Visual Computing, CentraleSupélec, INRIA Saclay, Université Paris-Saclay, Limoges, France
| | - Claire Lefort
- CNRS UMR 7252, XLIM Research Institute, Université de Limoges, Limoges, France
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Wetzel B, Kues M, Roztocki P, Reimer C, Godin PL, Rowley M, Little BE, Chu ST, Viktorov EA, Moss DJ, Pasquazi A, Peccianti M, Morandotti R. Customizing supercontinuum generation via on-chip adaptive temporal pulse-splitting. Nat Commun 2018; 9:4884. [PMID: 30459363 PMCID: PMC6244003 DOI: 10.1038/s41467-018-07141-w] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 10/18/2018] [Indexed: 11/09/2022] Open
Abstract
Modern optical systems increasingly rely on complex physical processes that require accessible control to meet target performance characteristics. In particular, advanced light sources, sought for, for example, imaging and metrology, are based on nonlinear optical dynamics whose output properties must often finely match application requirements. However, in these systems, the availability of control parameters (e.g., the optical field shape, as well as propagation medium properties) and the means to adjust them in a versatile manner are usually limited. Moreover, numerically finding the optimal parameter set for such complex dynamics is typically computationally intractable. Here, we use an actively controlled photonic chip to prepare and manipulate patterns of femtosecond optical pulses that give access to an enhanced parameter space in the framework of supercontinuum generation. Taking advantage of machine learning concepts, we exploit this tunable access and experimentally demonstrate the customization of nonlinear interactions for tailoring supercontinuum properties.
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Affiliation(s)
- Benjamin Wetzel
- Institut National de la Recherche Scientifique, Université du Québec, Varennes, QC, J3X 1S2, Canada. .,School of Mathematical and Physical Sciences, Department of Physics & Astronomy, University of Sussex, Falmer, Brighton, BN1 9QH, UK.
| | - Michael Kues
- Institut National de la Recherche Scientifique, Université du Québec, Varennes, QC, J3X 1S2, Canada.,School of Engineering, University of Glasgow, Rankine Building Oakfield Avenue, Glasgow, G12 8LT, UK
| | - Piotr Roztocki
- Institut National de la Recherche Scientifique, Université du Québec, Varennes, QC, J3X 1S2, Canada
| | - Christian Reimer
- Institut National de la Recherche Scientifique, Université du Québec, Varennes, QC, J3X 1S2, Canada.,John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, 02138, USA
| | - Pierre-Luc Godin
- Institut National de la Recherche Scientifique, Université du Québec, Varennes, QC, J3X 1S2, Canada
| | - Maxwell Rowley
- School of Mathematical and Physical Sciences, Department of Physics & Astronomy, University of Sussex, Falmer, Brighton, BN1 9QH, UK
| | - Brent E Little
- State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xinxi Ave, Xi'an, Shaanxi, China
| | - Sai T Chu
- Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | | | - David J Moss
- Centre for Micro-Photonics, Swinburne University of Technology, Hawthorn, VIC, 3122, Australia
| | - Alessia Pasquazi
- School of Mathematical and Physical Sciences, Department of Physics & Astronomy, University of Sussex, Falmer, Brighton, BN1 9QH, UK
| | - Marco Peccianti
- School of Mathematical and Physical Sciences, Department of Physics & Astronomy, University of Sussex, Falmer, Brighton, BN1 9QH, UK
| | - Roberto Morandotti
- Institut National de la Recherche Scientifique, Université du Québec, Varennes, QC, J3X 1S2, Canada. .,ITMO University, 199034, St. Petersburg, Russia. .,Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 610054, Sichuan, China.
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Lefort C, O'Connor RP, Blanquet V, Magnol L, Kano H, Tombelaine V, Lévêque P, Couderc V, Leproux P. Multicolor multiphoton microscopy based on a nanosecond supercontinuum laser source. JOURNAL OF BIOPHOTONICS 2016; 9:709-14. [PMID: 26872004 DOI: 10.1002/jbio.201500283] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 12/19/2015] [Accepted: 01/06/2016] [Indexed: 05/24/2023]
Abstract
Multicolor multiphoton microscopy is experimentally demonstrated for the first time on a spectral bandwidth of excitation of 300 nm (full width half maximum) thanks to the implementation a nanosecond supercontinuum (SC) source compact and simple with a low repetition rate. The interest of such a wide spectral bandwidth, never demonstrated until now, is highlighted in vivo: images of glioma tumor cells stably expressing eGFP grafted on the brain of a mouse and its blood vessels network labelled with Texas Red(®) are obtained. These two fluorophores have a spectral bandwidth covering the whole 300 nm available. In parallel, a similar image quality is obtained on a sample of mouse muscle in vitro when excited with this nanosecond SC source or with a classical high rate, femtosecond and quasi monochromatic laser. This opens the way for (i) a simple and very complete biological characterization never performed to date with multiphoton processes, (ii) multiple means of contrast in nonlinear imaging allowed by the use of numerous fluorophores and (iii) other multiphoton processes like three-photon ones.
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Affiliation(s)
- Claire Lefort
- Université de Limoges, CNRS UMR 7252, Labex "Sigma-Lim", INRA UMR 1061, F-87000, Limoges, France.
| | - Rodney P O'Connor
- Université de Limoges, CNRS UMR 7252, Labex "Sigma-Lim", INRA UMR 1061, F-87000, Limoges, France
| | - Véronique Blanquet
- Université de Limoges, CNRS UMR 7252, Labex "Sigma-Lim", INRA UMR 1061, F-87000, Limoges, France
| | - Laetitia Magnol
- Université de Limoges, CNRS UMR 7252, Labex "Sigma-Lim", INRA UMR 1061, F-87000, Limoges, France
| | - Hideaki Kano
- Institute of Applied Physics, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8573, Japan
| | - Vincent Tombelaine
- LEUKOS Innovative Optical Systems, 37 rue Henri Giffard, Z.I. Nord, 87280, Limoges, France
| | - Philippe Lévêque
- Université de Limoges, CNRS UMR 7252, Labex "Sigma-Lim", INRA UMR 1061, F-87000, Limoges, France
| | - Vincent Couderc
- Université de Limoges, CNRS UMR 7252, Labex "Sigma-Lim", INRA UMR 1061, F-87000, Limoges, France
| | - Philippe Leproux
- Université de Limoges, CNRS UMR 7252, Labex "Sigma-Lim", INRA UMR 1061, F-87000, Limoges, France
- LEUKOS Innovative Optical Systems, 37 rue Henri Giffard, Z.I. Nord, 87280, Limoges, France
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Liu Y, Tu H, Benalcazar WA, Chaney EJ, Boppart SA. Multimodal Nonlinear Microscopy by Shaping a Fiber Supercontinuum From 900 to 1160 nm. IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS : A PUBLICATION OF THE IEEE LASERS AND ELECTRO-OPTICS SOCIETY 2012; 18:10.1109/JSTQE.2011.2168559. [PMID: 24187481 PMCID: PMC3812947 DOI: 10.1109/jstqe.2011.2168559] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Nonlinear microscopy has become widely used in biophotonic imaging. Pulse shaping provides control over nonlinear optical processes of ultrafast pulses for selective imaging and contrast enhancement. In this study, nonlinear microscopy, including two-photon fluorescence, second harmonic generation, and third harmonic generation, was performed using pulses shaped from a fiber supercontinuum (SC) spanning from 900 to 1160 nm. The SC generated by coupling pulses from a Yb:KYW pulsed laser into a photonic crystal fiber was spectrally filtered and compressed using a spatial light modulator. The shaped pulses were used for nonlinear optical imaging of cellular and tissue samples. Amplitude and phase shaping the fiber SC offers selective and efficient nonlinear optical imaging over a broad bandwidth with a single-beam and an easily tunable setup.
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Affiliation(s)
- Yuan Liu
- Department of Bioengineering, Biophotonics Imaging Laboratory, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801 USA ( )
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Telford WG, Subach FV, Verkhusha VV. Supercontinuum white light lasers for flow cytometry. Cytometry A 2009; 75:450-9. [PMID: 19072836 DOI: 10.1002/cyto.a.20687] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Excitation of fluorescent probes for flow cytometry has traditionally been limited to a few discrete laser lines, an inherent limitation in our ability to excite the vast array of fluorescent probes available for cellular analysis. In this report, we have used a supercontinuum (SC) white light laser as an excitation source for flow cytometry. By selectively filtering the wavelength of interest, almost any laser wavelength in the visible spectrum can be separated and used for flow cytometric analysis. The white light lasers used in this study were integrated into a commercial flow cytometry platform, and a series of high-transmission bandpass filters used to select wavelength ranges from the blue (approximately 480 nm) to the long red (>700 nm). Cells labeled with a variety of fluorescent probes or expressing fluorescent proteins were then analyzed, in comparison with traditional lasers emitting at wavelengths similar to the filtered SC source. Based on a standard sensitivity metric, the white light laser bandwidths produced similar excitation levels to traditional lasers for a wide variety of fluorescent probes and expressible proteins. Sensitivity assessment using fluorescent bead arrays confirmed that the SC laser and traditional sources resulted in similar levels of detection sensitivity. Supercontinuum white light laser sources therefore have the potential to remove a significant barrier in flow cytometric analysis, namely the limitation of excitation wavelengths. Almost any visible wavelength range can be made available for excitation, allowing access to virtually any fluorescent probe, and permitting "fine-tuning" of excitation wavelength to particular probes.
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Affiliation(s)
- William G Telford
- Experimental Transplantation and Immunology Branch, National Cancer Institute, NIH, Bethesda, Maryland 20892, USA.
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Blandin P, Lévêque-Fort S, Lécart S, Cossec JC, Potier MC, Lenkei Z, Druon F, Georges P. Time-gated total internal reflection fluorescence microscopy with a supercontinuum excitation source. APPLIED OPTICS 2009; 48:553-559. [PMID: 19151824 DOI: 10.1364/ao.48.000553] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We present the instrumental development of a versatile total internal reflection fluorescence lifetime imaging microscopy setup illuminated by a supercontinuum laser source. It enables performing wide-field fluorescence lifetime imaging with subwavelength axial resolution for a large range of fluorophores. The short overall acquisition time and the axial resolution are well suited for dynamic neurobiological applications.
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Affiliation(s)
- Pierre Blandin
- Laboratoire de Photophysique Moléculaire, CNRS, Université Paris-Sud, Bat 210, 91405 Orsay, France
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Chapter 12 Reflections on FRET imaging. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/s0075-7535(08)00012-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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