800mJ高光束质量全固态1319nm脉冲激光器  

800mJ High Beam Quality All-Solid-State 1319nm Pulsed Laser

作　　者：李楠[1,1,1] 庞毓[1,1] 鲁燕华[1,1] 张雷[1,1] 谢刚[1,1] 王卫民[1,1] 许晓小[1,1] 

机构地区：[1]中国工程物理研究院高能激光科学与技术重点实验室,四川绵阳621900

出　　处：《中国激光》2013年第8期35-39,共5页Chinese Journal of Lasers

基　　金：国家自然科学基金重大项目(60890201);中国工程物理研究院科学技术发展基金项目(2012A0401020)

摘　　要：报道了一台高能量、高光束质量激光二极管抽运全固态1319nm激光器,激光器采用了主振荡器与放大器(MOPA)结构。通过反射镜镀膜和插入45°反射镜增加损耗以抑制1338nm和1064nm激光起振。主振荡器腔内插入温控法布里-珀罗(F-P)标准具实现线宽压窄和波长选择。为充分提取放大器能量以获得高能量脉冲输出,两级激光放大器均为双程放大,并对激光驱动电源信号进行处理,使激光器主放大器注入激光脉冲与驱动电源脉冲在时域上的重合性更好。在主放大器抽运电流为140A时获得了脉冲能量为800mJ的1319nm激光输出,光束质量因子M2=1.49,线宽为1.05GHz,重复频率为50Hz,脉宽约为200μs。A high energy and high beam quality laser diode pumped all-solid-state laser is reported. Master oscillator and power amplifier construction is used. The 1338 nm and 1064 nm oscillations are suppressed by coating reflector and inserting 45° mirror to increase losses. A temperature-controlled Fabry-Porro etalon is inserted in resonant cavity to realizing linewidth narrowing and wavelength selecting. In order to achieve high output energy, the laser is amplified twice in pre-amplifier and main amplifier. Drive source signal is delayed to make injected laser pulse of main amplifier and drive source pulse time-synchronization better. When pumpirlg current of the main amplifier is 140 A, the laser output energy is 800 mJ, the beam quality foctor M2 is 1.49, and the linewidth is 1.05 GHz. The repetition frequency is 50 Hz with the pulse width of about 200 μs.

关 键 词：激光器 全固态激光器 高能量激光 1319 nm激光 光束质量 

分 类 号：TN248[电子电信—物理电子学]