Beam combination through stimulated Brillouin scattering

Moyer, Richard H.; Valley, Marcy; Cimolino, Marc C.

doi:10.1364/josab.5.002473

Cited by 45 publications

(18 citation statements)

References 7 publications

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“…To achieve a high repetition rate in a high-power laser, many researchers have widely investigated several methods, such as a beam combination technique with SBS-PCMs, a diode-pumped laser system with gas cooling, an electron beam-pumped gas laser, and a large ceramic crystal (Lu et al, 2002;Kong et al, 1997Kong et al, , 2005aKong et al, , 2005bRockwell & Giuliano, 1986;Loree et al, 1987;Moyer et al, 1988). The beam combination technique seems to be one of the most practical of these techniques.…”

Section: Coherent Beam Combined Laser System With Phase Stabilized Sbmentioning

confidence: 99%

“…There have been several successful works in the history of the phase locking of SBS waves (Rockwell & Giuliano, 1986;Loree et al, 1987;Moyer et al, 1988). Although these works show good phase locking effects, they have some problems in terms of the practical application of a multiple beam combination.…”

Section: Phase Control Of the Sbs Wave By Means Of The Self-generatedmentioning

confidence: 99%

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Stimulated Brillouin Scattering Phase Conjugate Mirror and its Application to Coherent Beam Combined Laser System Producing a High Energy, High Power, High Beam Quality, and High Repetition Rate Output

Kong¹,

Lee²,

Yoon³

et al. 2010

Advances in Lasers and Electro Optics

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Section: Coherent Beam Combined Laser System With Phase Stabilized Sbmentioning

confidence: 99%

Section: Phase Control Of the Sbs Wave By Means Of The Self-generatedmentioning

confidence: 99%

Stimulated Brillouin Scattering Phase Conjugate Mirror and its Application to Coherent Beam Combined Laser System Producing a High Energy, High Power, High Beam Quality, and High Repetition Rate Output

Kong¹,

Lee²,

Yoon³

et al. 2010

Advances in Lasers and Electro Optics

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“…La combinaison de faisceaux par diffusion Brillouin stimulée a été observée en propagation libre par différents auteurs [Rockwell et Giuliano, 1986;Valley et al, 1986;Moyer et al, 1988].…”

Section: Beam Cleanup Par Effet Brillouin Dans Des Fibresunclassified

High power multimode fiber amplifier with wavefront reshaping for high beam quality recovery

Lombard

Brignon

Huignard

et al. 2006

Comptes Rendus. Physique

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Je remercie Jean-Paul Castéra de m'avoir accueilli à Thales Research and Technology où la majorité des travaux de thèse ont eu lieu en collaboration avec l'Institut d'Optique. Je remercie également Pierre Chavel pour avoir permis cette collaboration et pour m'avoir accueilli lors de la dernière année de thèse à l'Institut d'Optique.Je tiens aussi à remercier vivement François Sanchez et Alain Barthélémy, qui ont eu la lourde tâche de relire ce long document (et la longue tâche de relire ce lourd document). J'ai poussé le vice jusqu'à leur livrer le manuscrit au début des vacances d'été... encore désolé pour vos vacances.Mes remerciements vont aussi à Pierre Glorieux m'a fait l'honneur d'accepter la présidence de ce jury, de surcroît avec humour. Merci également à Bruno Desruelle et Jean-Louis Le Gouët qui ont eu la gentillesse de participer à ce jury. Enfin, un grand merci à Andrei Fotiadi, spécialiste de l'effet Brillouin, qui a accepté de faire le déplacement depuis la Belgique -et a supporté un manuscrit et une soutenance en français. Nous avons eu de nombreuses occasions de partager nos points de vue : merci aussi, Andrei, pour ces intéressants échanges.Je tiens à remercier chaleureusement les trois personnes qui m'ont directement encadré : Arnaud Brignon, Patrick Georges et Jean-Pierre Huignard. Arnaud, merci pour ton encadrement, ta disponibilité, tes conseils pragmatiques et efficaces et la confiance que tu as su m'accorder. Et pour ton humour, aussi ! Patrick, merci pour ton accompagnement tout au long de cette thèse. Bien que la partie expérimentale ne se soit pas déroulée dans ton laboratoire, tu as toujours su te tenir informé et être de bon conseil. Merci pour ton accueil lors de la dernière année et ton chaleureux soutien (qui rend cette période presque agréable !) pendant la rédaction de ce manuscrit, que tu as par ailleurs rigoureusement relu et corrigé. Jean-Pierre, merci pour vos visites régulières, pour votre enthousiasme communicatif pour votre imagination débordante. Nos échanges ont été extrêmement productifs et motivants.Je n'oublie pas Éric Lallier, Gilles Pauliat, Gaëlle Lucas-Leclin, Gérald Roosen, qui ont de près ou de loin participé à ces travaux. Éric, à qui la barbe sied, surtout celle de Père-Noël (qui en descendant du Ciel vers le 25 décembre 2002, m'a déposé une jolie diode de pompe de 300W dans mes petits souliers !), merci pour ta disponibilité et tes conseils utiles. Gilles, merci pour ta collaboration et ton aide précieuse sur le cristal photoréfractif.

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“…The process of phase conjugation via stimulated Brillouin scattering (SBS) has been investigated by many researchers over the last three decades [1][2][3][4][5][6][7][8], more recently because of its utility as a possible method for coherently combining the power from several laser beams into a single beam. Early experimental studies on coherent coupling and beam combination via SBS [1,2] focused on the use of bulk media and high power pulsed lasers.…”

Section: Introductionmentioning

confidence: 99%

“…Early experimental studies on coherent coupling and beam combination via SBS [1,2] focused on the use of bulk media and high power pulsed lasers. The work done in the reporting period focuses on the study of SBS in optical fibers with a goal of studying its applicability for phase conjugation of radiation from CW lasers, and of using SBS to demonstrate high power fiber lasers by coherent combination of beams from several fiber amplifiers.…”

Section: Introductionmentioning

confidence: 99%

Advanced High-Power Near-Infrared Fiber Lasers

Mocofanescu¹,

Jain²

2005

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Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing this collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden to Department of Defense, Washington Headquarters Services, Directorate for Information , 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ADDRESS. REPORT DATE (DD-MM-YYYY) DISTRIBUTION / AVAILABILITY STATEMENTApproved for public release; distribution is unlimited. SUPPLEMENTARY NOTESThe views, opinions and/or findings contained in this report are those of the author(s) and should not be construed as an official Air Force Research Laboratory position, policy or decision, unless so designated by other documentation. ABSTRACTExperiments were conducted to study stimulated Brillouin scattering (SBS) in optical fibers with a goal of studying its applicability for phase conjugation of radiation from CW lasers, and of using SBS to demonstrate high power fiber lasers by coherent combination of beams from several fiber amplifiers. It was determined that usual plane-wave theory of SBS does not correctly predict the threshold when applied to SBS in single-mode step-index and multimode GRIN fibers. By properly accounting for the mode sizes and modal dispersion in the fibers, good agreement (within 15%) between experiments and theory was obtained. Good compensation of beam distortion was demonstrated via SBS in long multimode fibers (length of the order of 1 km), both with butt-coupling and focusing geometries. We have demonstrated the reduction of the SBS threshold, an increase in the SBS reflectivity and reduction in Stokes power fluctuations for seeded SBS in long multimode fibers. We have demonstrated distortion compensation via (beam "cleanup") in the seeded SBS configuration. (Fig.9a); the incident beam after the aberrator ( Fig.9b); the SBS return beam before the aberrator ( Fig.9c); the SBS return beam after the aberrator (Fig.9d) SUBJECT TERMS SUMMARY• Experiments were conducted to study stimulated Brillouin scattering (SBS) in optical fibers with a goal of studying its applicability for phase conjugation of radiation from CW lasers, and of using SBS to demonstrate high power fiber lasers by coherent combination of beams from several fiber amplifiers.• It was determined that usual plane-wave theory of SBS does not correctly predict the threshold when applied to SBS in single-mode step-index and multimode GRIN fibers. By properly accounting for the mode sizes and modal dispersion in the fibers,...

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Beam combination through stimulated Brillouin scattering

Cited by 45 publications

References 7 publications

Stimulated Brillouin Scattering Phase Conjugate Mirror and its Application to Coherent Beam Combined Laser System Producing a High Energy, High Power, High Beam Quality, and High Repetition Rate Output

Stimulated Brillouin Scattering Phase Conjugate Mirror and its Application to Coherent Beam Combined Laser System Producing a High Energy, High Power, High Beam Quality, and High Repetition Rate Output

High power multimode fiber amplifier with wavefront reshaping for high beam quality recovery

Advanced High-Power Near-Infrared Fiber Lasers

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