对受激布里渊散射激光进行组束的数值模拟及方案设计  

Numerical simulation and scheme design for laser beam combination of stimulated Brillouin scattering

作　　者：王双义[1] 林殿阳[1] 吕志伟[1] 赵晓彦[1] 王超[1] 王晓慧[1] 

机构地区：[1]哈尔滨工业大学光电子技术研究所,黑龙江哈尔滨150001

出　　处：《强激光与粒子束》2003年第9期877-880,共4页High Power Laser and Particle Beams

基　　金：国家自然科学基金资助课题(60278033);国家863计划项目资助课题;1999年教育部"跨世纪优秀人才培养计划"基金资助课题

摘　　要：　提出了时间上串行的多路激光脉冲通过受激布里渊散射(SBS)池进行组束的方法,并对其进行了数值模拟研究。利用6束每束能量为45J的KrF激光进行组束,可获得能量为141.89J,脉宽为670ps的Stokes输出光。根据模拟结果设计出了时间上串行的SBS激光组束的两个方案,对其进行了讨论。数值模拟还发现在介质的增益系数更大、声子寿命更短的情况下,输出激光脉冲的脉宽可以压缩得更窄。A novel scheme for multistage serial stimulated Brillouin scattering(SBS) laser beam combination was presented and numerical simulations were made. In the scheme, six pumping beams with equal energy and pulse width pumped six SBS cells respectively, and a seed beam was injected and passed the six SBS cells in sequence. Numerical simulation shows that six KrF pumping beams with energy of 45J and pulse width of 23ns produce an output Stokes beam with energy of 141.89J and pulse width of 670ps. Numerical simulation also shows that shorter output pulse duration can be obtained, while medium gain is higher and phonon lifetime is shorter.

关 键 词：受激布里渊散射 组束 数值模拟 

分 类 号：O437.2[机械工程—光学工程]