摘要
为了得到一台大功率连续波绿光激光器,采用9个20W的高功率半导体激光器侧面抽运Nd∶YAG棒,倍频晶体选用Ⅱ类相位匹配的KTP晶体,设计了三镜折叠腔结构,使得放置倍频晶体位置处基频光的光腰稍大,从而尽量避免KTP晶体的"灰线效应",通过调节角度的办法来补偿倍频晶体热效应导致的相位失配,得到在抽运电流为19.5A时,连续波绿光输出可达16W,倍频转换效率为40%的结果。实验结果表明,Nd∶YAG/KTP是产生大功率连续绿光的较佳组合。
In order to get high power CW green output, the laser pumped by 9 × 20W high power laser diode arrays with a type 11 phase matched KTP crystal was developed. Properly enlarging the light waist where KTP crystal was laid to avoid ＂gray tracks effect＂. At last, 16W CW green laser output and 40% second-harmonic genration conversion efficiency were achieved at pumping current of 19.5A,with compensating phase mismatch by angle departure. The results show that Nd：YAG/KTP are good choice for high power CW green output.
出处
《激光技术》
CAS
CSCD
北大核心
2008年第3期312-313,共2页
Laser Technology
