Influence of medium parameters on power limiting characteristic in stimulated Brillouin scattering process

作     者：龚华平 吕志伟 林殿阳 刘松江 

作者机构：Institute of Opto-Electronics Harbin Institute of TechnologyHarbin 150001 Institute of Opto-ElectronicsChina Jiliang UniversityHangzhou 310018 Institute of Opto-Electronics Harbin Institute of TechnologyHarbin 150001 Institute of Opto-Electronics Harbin Institute of TechnologyHarbin 150001 Department of PhysicsDaqing Petroleum InstituteDaqing 163318 

出 版 物：《Chinese Optics Letters》 (中国光学快报（英文版）)

年 卷 期：2007年第5卷第11期

页      面：674-676页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：This work was supported by the National Natural Science Foundation of China under Grants No.10476009 and 60278033 

主　　题：Phonons 

摘      要：By adopting noise initiation model of stimulated Brillouin scattering （SBS）, the influence of phonon lifetime and gain coefficient of medium on power limiting characteristic is numerically investigated. Through using actual parameters of three media, CCl4, acetone, and CS2, the waveforms of transmitted pulses are simulated. The result shows that different media have little effect on the front peak of waveform, while have an obvious effect on the height of power limiting platform. When the medium which has short phonon lifetime and small gain coefficient is used, the height of power limiting platform is comparatively high. In experiment, by focusing 1064-nm, 8-ns, 18-mJ pulses into these three media, the waveforms of transmitted pulses are obtained. The experimental results are in good agreement with conclusions of theoretical simulations.