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Phase stabilization of the amplitude dividing four-beam combined laser system using stimulated Brillouin scattering phase conjugate mirrors

Published online by Cambridge University Press:  18 February 2009

H.J. Kong ,
J.S. Shin ,
J.W. Yoon  and
D.H. Beak
H.J. Kong*
Affiliation:
Department of Physics, KAIST, Yuseong-gu, Daejeon, Korea
J.S. Shin
Affiliation:
Department of Physics, KAIST, Yuseong-gu, Daejeon, Korea
J.W. Yoon
Affiliation:
Department of Physics, KAIST, Yuseong-gu, Daejeon, Korea
D.H. Beak
Affiliation:
Department of Physics, KAIST, Yuseong-gu, Daejeon, Korea
*
Address correspondence and reprint requests to: Hong Jin Kong, Department of Physics, KAIST, Department of Physics, KAIST, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Korea. E-mail: hjkong@kaist.ac.kr
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Abstract

The beam combination method using stimulated Brillouin scattering phase conjugate mirrors (SBS-PCMs) is a promising technique for a high energy and high power laser output operating with a high repetition rate. The two-beam combined system was previously demonstrated with an amplitude dividing method. A four-beam combined laser system with amplitude dividing method is demonstrated in this work, and the phase stabilization experiment of this system is performed using the self phase control and the long-term stabilization technique. The phase differences between the SBS waves are stabilized with λ/30 and the fluctuation of the four-beam combined output energy is 6.16% during 2000 shots (200 s).

Keywords

Beam combinationHigh energy laserLong-term stabilizationPhase conjugate mirrorPhase controlStimulated Brillouin scattering
Type
Research Article
Information
Laser and Particle Beams , Volume 27 , Issue 1 , March 2009 , pp. 179 - 184
Copyright
Copyright © Cambridge University Press 2009

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