A new approach to realize high-energy and high-power stimulated Brillouin scattering phase conjugation mirrors (SBS-PCMs) is described. The reflectivity of SBS-PCM is investigated under a 10-Hz repetition rate and a high energy load. The relationship between reflectivity and input energy is examined experimentally with different PCM structures, focus lengths, and medium cell structures. A medium cell with a circulating structure is designed, and its advantage is demonstrated through an experimental comparison with traditional PCM structures. The 30-cm focus lens and 150-cm collimation lens are optimized when the input energy reaches 1010 mJ at 10-Hz repetition rate. Therefore, a reflectivity of 84.7% and a higher energy load using the circulating two-cell structure are achieved.
© 2010 Chinese Optics Letters
(140.3580) Lasers and laser optics : Lasers, solid-state
(190.2640) Nonlinear optics : Stimulated scattering, modulation, etc.
(190.5040) Nonlinear optics : Phase conjugation
(140.3535) Lasers and laser optics : Lasers, phase conjugate
Yulei Wang, Zhiwei Lv, Qi Guo, Peng Wu, Zhenxing Zheng, and Weiming He, "A new circulating two-cell structure for stimulated Brillouin scattering phase conjugation mirrors with 1-J load and 10-Hz repetition rate," Chin. Opt. Lett. 8, 1064-1066 (2010)