Compensation of the thermally induced depolarization in a double-pass Nd:YAG rod amplifier with a stimulated Brillouin scattering phase conjugate mirror

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Stimulated Brillouin scattering phase conjugate mirrors (SBS-PCMs) are extensively used to compensate the phase distortion of active media in a high-energy laser system with double-pass amplification. However, the depolarization loss from the thermally induced birefringence of the active medium by a photoelastic effect cannot be avoided despite the uses of phase conjugate mirrors. In this work, the depolarization loss in a double-pass Nd:YAG rod amplifier with a SBS-PCM has been studied with Jones matrix calculations. In addition, the depolarization ratios and the leak beam patterns are obtained experimentally and theoretically for four possible optical schemes. Both experiment and theoretical results show that depolarization is effectively compensated when a Faraday rotator is located after the amplifier. Crown Copyright (C) 2010 Published by Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2010-06
Language
English
Article Type
Article
Keywords

SOLID-STATE LASERS; ND-YAG LASER; INERTIAL FUSION ENERGY; QUARTER-WAVE PLATE; INDUCED BIREFRINGENCE; BEAM QUALITY; HIGH-POWER; DRIVER; PERFLUOROPOLYETHER; PERFORMANCE

Citation

OPTICS COMMUNICATIONS, v.283, no.11, pp.2402 - 2405

ISSN
0030-4018
DOI
10.1016/j.optcom.2010.02.013
URI
http://hdl.handle.net/10203/96653
Appears in Collection
PH-Journal Papers(저널논문)
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