摘要
报道了利用激光二极管端面抽运Nd∶YAG晶体,通过Cr4+∶YAG晶体可饱和吸收被动调Q,KTP晶体腔内倍频及BBO晶体腔外四倍频,实现266 nm连续脉冲输出。通过优化激光器外谐振腔,提高腔外非线性变频转化效率。LD抽运功率为4.6 W时,得到532 nm激光平均输出功率为154 mW,与腔外直接倍频相比,532 nm激光的平均功率提高了3倍,单脉冲能量和峰值功率提高了2倍,这有利于四倍频转化效率的提高。266 nm紫外激光平均输出功率为3 mW。
266 nm ultraviolet pulse laser is obtained by passively Q- switched Cr4 ＋∶ YAG,KTP crystal which are used for intra- cavity frequency doubling and BBO crystal which is used for extra- cavity frequency quadrupling. The laser is an LD end- pumped Nd ∶ YAG laser. By optimizing external resonator of the laser,the efficiency of the nonlinear frequency conversion is improved. When the pump power is 4. 6 W,the 532 nm laser average output power is 154 mW. Compared with external cavity frequency doubling,the average power of 532 nm laser is improved by three times,single pulse energy and peak power are improved by 2 times. The output power of 266 nm laser is 3 mW.
出处
《激光与红外》
CAS
CSCD
北大核心
2013年第12期1355-1358,共4页
Laser & Infrared
关键词
全固态
266
NM
外谐振腔
倍频
all-solid-state
ultraviolet
external-resonator
frequency doubling
