高效腔内色散调QNd:YAG紫外激光器  

Efficient Intracavity Dispersion Q CW Nd:YAG UV Laser

作　　者：张晶[1] 樊仲维[2] 亓岩[3] 毕勇[3] 石朝辉[1] 张瑛[2] 裴博[2] 赵剑波[2] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所 [2]北京国科世纪激光技术有限公司,北京100085 [3]中国科学院光电研究院,北京100080

出　　处：《光电子．激光》2006年第12期1474-1476,共3页Journal of Optoelectronics·Laser

摘　　要：采用避免激光器不稳定的色散调QYAG激光谐振腔设计,用Ⅰ类非临界相位匹配LBO晶体,在腔内产生二次谐波,产生的532nm与腔内1064nm在腔内经过Ⅱ类临界相位匹配LBO晶体产生355nm的紫外激光。为了提高谐波转化效率,分别在腔内插入了λ/4波片、偏振片,得到在泵浦抽运光功率约为120W时输出2.5W的355nm紫外激光,功率稳定性RMS在3h内小于0.8%。A new kind of dispersion resonant cavity is adopted in the Q CW YAG laser to avoid the instability of laser. The second harmonics is produced through type Ⅰ non-critical phase matching of LBO in the resonant cavity,and then 532 nm and 1 064 nm in the cavity are mixed in the type Ⅱ critical phase matching of LBO to produce 355 nm laser output. To improve the conversion efficiency of harmonic wave,we insert λ/4 wave plate and a polarizing disc in the resonant cavity. As a result,we get approximately 2.5 W 355 nm UV ou.tput under the condition of 120 W pumping power,and the power reliability （3 hours） RMS is less than 0.8%.

关 键 词：色散 棱镜 紫外激光 激光技术 

分 类 号：TN248.1[电子电信—物理电子学]