第18卷第4期 2010年4月
1004-924X(2010)04-0805-04
文章编号
光学精密工程
Optics and Precision Engineering
Vol.18No. 4
Apr.2010
全固态复合内腔和频570nm连续波黄光激光器
姜忠明，陈殿仁
（长春理工大学理学院，吉林长春130022）
摘要：研制了全固态连续波570nm黄光激光器，黄激光分别由两片Nd：YAG的1444nm和946nm谱线非线性和频产生，两条谱线分别对应各自的晶体能级跃迁"Fa/a-"Iis/z和"Fa/-"Is/t。实验采用复合腔结构，利用KTP晶体II类临界相位进行内腔和频。测量了570nm黄激光输出功率随泵浦功率的变化，结果表明，当注人到两片Nd：YAG晶体的泵浦功率分别为24W和15W时，获得了560mW的连续波570nm黄激光输出，其4h功率稳定度优于±2.8%。在输出功率为560mW时，采用光束质量分析仪测量了激光输出光班质量，结果显示，在570nm最大和频激光输出时的光束质
量因子M为2.3。所提出的复合内腔和频技术可为新波长激光器的发展提供参考。关键词：全围态激光器；黄光激光器；复合腔；和频
中图分类号：TN248.1
文献标识码：A
All-solid-statecontinuous-wavedoublyresonantall-intracavity
sum-frequencyyellowlaserat570nm
JIANGZhong-ming，CHENDian-ren
(School of Sciences,Changchun University of Sciencesand Technology,.Changchun 130022,China) Abstract: An all solid-state continuous-wave yellow laser at 57o nm is firstly reported. The yellow la-ser is from two Nd : YAG spectral lines of 1 444 nm and 946 nm with a nonlinear sum frequency,and the two spectral lines correspond to their energy levels of crystal transition for Fs/2-"Is/2 and ^Fs/2-"Ig/2, respectively. By using a doubly folded-cavity, the yellow laser at 570 nm is obtained by a intra-cavity sum frequency mixing of type-II critical phase matching KTP crystal at 1 444 nm and 946 nm. The outpower of yellow laser us incident pump powers is measured,results indicate that when pump powers injected into two Nd : YAG crystals are 24W and 15W, respectively, the 570 nm yellow laser of 560 mW can be obtained,and its power stability in 4 h is better than ±2. 8%. Further more,the beam quality of the yellow laser is measured by a beam quality analyzer in an output power of 560 mW, and results show its beam quality factor M° is 2. 3 in the laser with a maximum sum-fre quency output.
Keywords; all-solid-state laser;yellow laser;doubly resonant;sum-frequency
收稿日期：2009-11-12；修订日期：2010-01-18.
基金项目："十一五"兵器预研支撑基金资助项目（No.62301110109）