相遇时间对双布里渊放大池放大控制脉冲波形的影响  

Effect of Encounter Time on Pulse Shape Control by Two Brillouin Amplifiers

作　　者：杨珺[1] 吕志伟[2] 何伟明[2] 阮双琛[3] 张伟[1] 

机构地区：[1]哈尔滨工业大学空间光学工程研究中心,黑龙江哈尔滨150001 [2]哈尔滨工业大学光电子技术研究所,黑龙江哈尔滨150001 [3]深圳大学电子科学与技术学院,广东深圳518060

出　　处：《中国激光》2008年第6期840-844,共5页Chinese Journal of Lasers

摘　　要：在传统独立双池结构的受激布里渊散射(SBS)相位共轭镜(PCM)系统中,对布里渊放大池进行改进。引入修整放大池,采用主放大池与修整放大池相结合的双布里渊放大池结构控制脉冲波形,主放大池对脉冲波形进行粗调,修整放大池对脉冲波形,特别是脉冲前沿进行微调。理论和实验研究了相遇时间对双布里渊放大池放大控制脉冲波形的影响,得到了不同相遇时间下,脉冲波形随双池间距的变化规律。研究表明,相遇时间是决定放大光脉冲波形整体形状的重要参数,相遇时间越长,脉冲可控范围越大,但是系统的效率越低。A reshaping Brillouin amplifier is suggested to combine with the main amplifier in the system of the stimulated Brillouin scattering （SBS） phase conjugate mirror （PCM）. In this novel scheme, the main amplifier can coarsely tune the output pulse shapes, while the reshaping amplifier is to finely control the output pulse shapes. Effects of encounter time on pulse shapes are theoretically and experimentally researched, and pulse shapes versus the distance between the two amplifiers are achieved with various encounter time. Results show that the encounter time decides the general pulse shape and is an important parameter to control the pulse shape. The longer the encounter time, the wider the control range, and the lower the efficiency of the system.

关 键 词：光电子学 脉冲波形控制 布里渊放大器 相遇时间 

分 类 号：O437[机械工程—光学工程]