摘要
通过优化平-凹-平三镜折叠腔结构设计,利用大功率半导体激光器侧面抽运、Ⅱ类相位匹配KTP晶体腔内倍频,获得高效高功率连续绿色激光输出.当抽运电流约为36 A时,得到最高36.6 W的连续绿光激光输出,对应的光—光转换效率为8.71%.在输出功率33 W时测量激光功率稳定性,其功率不稳定度为0.27%.用刀口法测量了激光器高输出功率时的光束质量,光束质量因子小于8.对高功率抽运情况下三镜折叠腔的像散补偿、失调灵敏度和基模在腔内分布情况做了数值模拟.
High-power and high efficiency continuous wave green laser has been realized by optimizing the plane-concave-plane resonator of three mirrors in an laser diode side-pumped configuration and KTP of Ⅱ-type phase-matching for frequency doubling. A maximum of 36.6 W continuous wave 532 nm green laser is obtained at pumping current of 36 A, corresponding to optical-to-optical conversion efficiency of 8.71%. The power stability of the laser is measured at output power of 33 W. During a half hour measurement time, the output power instability is 0.27 %. The beam transfer factor is less than 8 measured by knifeedge method at output power of 33 W. Astigmatism compensation, misalignment sensitivity and mode profile inside resonator of three mirror folded resonator are also numerically simulated under high pump power.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2009年第7期4647-4651,共5页
Acta Physica Sinica
基金
国家自然科学基金面上项目(批准号:60671036)
山东科技大学春蕾计划项目(批准号:2008AZZ094)资助的课题~~
关键词
侧面抽运
腔内倍频
连续波
diode-side-pumping, intracavity-frequency-doubling, CW
