Abstract The optical limiting effect based on stimulated Brillouin scattering (SBS) in a nonlinear medium was investigated. We numerically treated the nonlinear propagation process with a theoretical model, which includes the spontaneous nature of the initiation of SBS, and obtained optical limiting effect in the process. Energy limiting, pulse reshaping and stabilization have been demonstrated on SBS mechanism with the nonlinear medium CCl4. The input optical signals were Nd:YAG nanosecond laser pulses with width varying from 16ns to 7ns then to 2ns, the relationship between the transmitted signal and launched pump signal was shown. In the experimental regime, the most stable pulse and a superior energy stabilization of the transmitted pulse were obtained when the laser pulse-width became as short as 2ns. For the energy variation of laser pulses in a wide range of 14－88mJ, the output energy was limited in a quite narrow range 4.5－5.5mJ.
Received: 23 September 2002
Revised: 20 January 2003
Accepted manuscript online:
(Efficiency, stability, gain, and other operational parameters)
Fund: Project supported by the Trans-Century Training Program Foundation for Talents from the Ministry of Education in 1999 and the National Natural Science Foundation of China (Grant No 60278033).
Cite this article:
Lü Zhi-Wei (吕志伟), Lü Yue-Lan (吕月兰), Yang Jun (杨珺) Optical limiting effect based on stimulated Brillouin scattering in CCl4 2003 Chinese Physics 12 507
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