大能量窄脉宽高平均功率绿光激光器

Green Laser with High Energy,Narrow Pulse Width and High Average Power

研制了在大能量窄脉宽情况下实现高平均功率输出的绿光激光系统。利用激光二极管抽运Nd∶YAG晶体,采用RTP晶体电光调Q和主振荡功率放大的功率分摊技术,实现大能量窄脉宽高重复频率532 nm绿光激光输出。输出基频光波长1064 nm,脉冲平均能量213 mJ,工作频率100 Hz,光-光转换效率12%。采用Ⅱ类相位匹配高抗灰迹KTP晶体腔外倍频,输出绿光波长532 nm,脉冲平均能量127 mJ,工作频率100 Hz,脉冲宽度7.2 ns,光束质量20mm.mrad,532 nm插头效率2.1%。

A green laser system with high average power output is developed with high energy and narrow pulse width. With diode laser pumped Nd： YAG crystal, RTP electro-optic Q-switching and power dividing by master oscillator power amplifying （MOPA）, the 532 nm green laser output with high energy, narrow pulse width and high repetition rate is realized. For the fundamental frequency output at 1064 nm, the average pulse energy is 213 mJ, the operating frequency is 100 Hz and the optical-optical conversion efficiency is 12%. While a type Ⅱ phase matching high gray track resistance KTP crystal is used for extra cavity frequency doubling, an green light output at 532 nm can be obtained, with the average pulse energy of 127 mJ, the operating frequency of 100 Hz, the pulse width of 7.2 ns, the beam quality of 20 mm · mrad and the total wall plug efficiency of 2.1%.