摘要
介绍了一种光纤耦合激光二极管阵列(LDA)同时泵浦Nd:YAG和Nd:YVO4晶体输出554.8nm连续波的全固态黄-绿光激光器。黄-绿激光是由Nd:YAG晶体的946nm激光和Nd:YVO4晶体的1342nm激光非线性和频产生,两条谱线在各自晶体的对应能级跃迁分别为4F3/2-4I9/2和4F3/2-4I13/2。实验中采用复合腔结构,利用KTP晶体II类临界相位匹配进行腔内和频,当注入到Nd:YAG和Nd:YVO4晶体的泵浦功率分别为30W和20W时,获得了1.13W的连续波554.8nm黄-绿激光输出,光束质量因子M2<1.22,这是目前为止该波长已见报道的最高功率输出值。实验结果表明:采用Nd∶YAG和Nd∶YVO4两种激光晶体进行腔内和频是获得黄-绿激光的高效方法,并可以应用到其他两种激光晶体进行腔内非线性和频,获得更多不同波长的激光输出。
An all-solid-state continuous-wave yellow-green laser at 554.8 nm made by fiber coupled LDA pumping Nd：YAG and Nd：YVOa crystals at the same time was studied. The yellow-green laser was obtained by nonlinear sum-frequency of 946 nm and 1 342 nm laser, 946 nm wavelength was obtained from ^4F3/2-^4I9/2 transition in Nd：YAG and 1 342 nm wavelength was obtained from ^4F3/2-^4I13/2 transition in Nd：YVO4. The yellow-green laser of 1.13 W output at 554.8 nm was obtained by using a double cavity, type-II critical phase matching KTP crystal intra-cavity sum-frequency to 946 nm and 1 342 nm, and incident pumped power of 30 W in Nd：YAG and 20 W in Nd：YVO4.It was reported that this was the maximum power output at the wavelength and its M2 factor was less than 1.22. The experimental results show that the Nd：YAG and Nd：YVO4 crystals intra-cavity sum-frequency is an effective method for yellow-green laser and it can be applied to the other two laser crystals to obtain more all-solid-state lasers with different wavelengths.
出处
《红外与激光工程》
EI
CSCD
北大核心
2009年第5期869-872,共4页
Infrared and Laser Engineering
基金
"十一五"兵器预研支撑基金项目(62301110109)
关键词
黄-绿光激光器
复合腔
和频
全固态
Yellow-green laser
Doubly resonant intra-cavity
Sum-frequency
All solide-state
作者简介
李永亮（1973-），男，吉林长春人，副研究员，主要从事激光技术与应用、非线性光学等方面的研究。Email：liyongliang@cust．edu．cn
