论文部分内容阅读
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。
Reported a high-energy, high-beam-quality laser diode pump all-solid-state 1319nm laser, the laser oscillator using a main oscillator and amplifier (MOPA) structure. Through the mirror coating and insertion 45 ° mirror to increase the loss to suppress 1338nm and 1064nm laser oscillation. The main oscillator cavity into the temperature control Fabry-Perot (F-P) etalon to achieve narrow linewidth and wavelength selection. In order to fully extract the energy of the amplifier to obtain high-energy pulse output, the two-stage laser amplifier is a two-way amplification, and the laser drive power signal processing, so that the laser main amplifier into the laser pulse and drive power pulse in the time domain coincidence more it is good. When the main amplifier pumping current is 140A, a laser output of 1319nm with a pulse energy of 800mJ is obtained. The beam quality factor M2 = 1.49, the linewidth is 1.05GHz, the repetition frequency is 50Hz and the pulse width is about 200μs.