全固态复合式内腔和频500.8nm连续波青光激光器  

All-Solid-State Continuous-Wave Doubly Resonant All-Intracavity Sum-Frequency Mixing Cyan Laser at 500.8 nm

作　　者：金光勇[1] 于永吉[1] 王超[1] 王奕博[1] 沙鹏[1] 梁柱[1] 

机构地区：[1]长春理工大学理学院激光技术研究所,吉林长春130022

出　　处：《中国激光》2009年第7期1723-1726,共4页Chinese Journal of Lasers

基　　金：吉林省杰出青年基金(20060121)资助课题

摘　　要：报道了一台全固态连续波500,8 nm青光激光器。实验中采用复合式谐振腔结构,用两个激光二极管阵列(LDA)经过光纤耦合分别单独端面抽运两块Nd:YAG晶体,青色激光由两块Nd:YAG晶体的1064 nm和946 nm谱线非线性和频产生。在两个子谐振腔的交叠区域利用LBO Ⅰ类临界相位匹配进行腔内和频,通过谐振腔优化设计,实现了腔内两个波长较好的模式与增益匹配。当注入到两块Nd:YAG晶体的抽运功率分别为12 W和8 W时,获得223 mW的TEM00模连续波500.8 nm青色激光输出,水平和垂直方向的光束质量M2因子约为1.2。实验结果表明,采用复合式腔结构和频是获取高功率500.8 nm青色激光输出的有效方法。An all solid-state continuous-wave cyan laser at 500.8 nm is presented. By using a new resonator for doubly resonant, two Nd： YAG are pumped by two laser diode arrays （LDA） coupled by optical fibers, respectively. In the two cavities, wavelengths of 1064 nm from one Nd： YAG and 946 nm from the other are chosen to be mixed into 500.8-nm cyan laser. Through proper design of the cavity, the optimum matching of modes and gains for the two wavelengths can be obtained. In the overlapping of the cavities, sum-frequency mixing is generated with a type I critical phase matching LBO crystal. The cyan laser output of 223 mW at 500.8 nm with TEM00 mode is obtained at the incident pump power of 12 W for one Nd： YAG crystal and 8 W for the other. The beam quality M2 value is about 1.2 in both horizontal and vertical directions at the maximum output power. The experimental results show that the intracavity sum-frequency mixing by doubly resonant is an effective method for high power 500.8-nm cyan laser.

关 键 词：激光器 青光激光器 和频 复合腔 激光二极管抽运 

分 类 号：TN248.1[电子电信—物理电子学]