高重复频率大能量单纵模激光器  

High Repeating Rate and Big Energy Single-longitudinal-mode Laser

作　　者：刘朗[1] 秘国江[1] 黄茂全[2] 张世文[1] 杜涛[1] 王运谦[1] 

机构地区：[1]华北光电技术研究所激光技术部,北京100015 [2]山西大学光电研究所,山西太原030006

出　　处：《中国激光》2003年第10期885-889,共5页Chinese Journal of Lasers

摘　　要：采用半导体激光抽运单纵模激光器作为主振荡器、三级氙灯抽运的Nd∶YAG放大器及受激布里渊散射(SBS)位相共轭镜组成双通放大MOPA系统 ,并采用像传递、热退偏补偿及消除激光器自激等关键技术 ,完成了一套高重复频率大能量单纵模激光器。在频率为 4 0Hz时 ,获得输出能量 >4 5 0mJ,能量输出稳定性为 3 5 %(RMS) ,脉冲宽度约 8ns,光束质量为近衍射极限 (<1 3衍射极限 )A solid-state master oscillator power amplifier (MOPA) system is built, which consists of a single-longitudinal-mode resource pumped by semiconductor laser, three amplifiers pumped by xenon lamps which beam light passes double times and the phase conjugating SBS-mirror to compensate the phase distortions. In this laser system, image transfer, thermal depolarization compensation, elimination of self-lasing and other key technologies are employed to improve the quality of the output beam. In addition, the output energies over 450 mJ are obtained at 40 Hz, with output energy stability of 3.5% (RMS), pulse width about 8 ns and mode quality <1.3 DL.

关 键 词：激光技术 单纵模 热退偏补偿 像传递 受激布里渊散射(SBS)位相共轭 

分 类 号：TN248.1[电子电信—物理电子学]