受激布里渊散射光脉冲波形的研究  

Study on stimulated Brillouin scattering pulse waveform

作　　者：哈斯乌力吉[1] 吕志伟[1] 滕云鹏[1] 刘述杰[1] 李强[1] 何伟明[1] 

机构地区：[1]哈尔滨工业大学光电子技术研究所,哈尔滨150001

出　　处：《物理学报》2007年第2期878-882,共5页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10476009;60478020)资助的课题~~

摘　　要：从实验和理论上研究了受激布里渊散射(SBS)光脉冲波形.在Nd∶YAG调Q激光器中实验研究了SBS光脉冲波形随抽运光参数、结构参数和介质参数的变化规律,并利用SBS理论模型进行了数值模拟,实验与数值模拟结果的变化趋势基本一致.结果表明,抽运光能量越小,透镜焦距越短,镜-池间距越长,介质声子寿命越长,SBS光脉冲波形就越不容易出现调制现象.分析和讨论了抽运光参数、结构参数和介质参数对SBS光脉冲波形的影响机理.in this paper, the pulse waveform of stimulated Brillouin scattering （SBS） is investigated experimentally and theoretically. The variations of SBS pulse waveform with pump parameters, structural parameters and medium parameters are experimentally investigated with a Nd： YAG Q-switched laser, and numerically simulated using SBS theory model. The theoretical calculations are in good agreement with the experimental results. The results indicate that modulation of pulse waveform is difficult to realige with low pump energy, short focal length, long lens-cell distance and long phonon life time. The influence of the pump parameters, structural parameters and medium parameters on SBS pulse waveform is discussed extensively.

关 键 词：受激布里渊散射 脉冲波形 抽运光参数 结构参数 

分 类 号：O437.2[机械工程—光学工程]