高效LD侧面泵浦腔外倍频绿光激光器  

Efficient Diode-Side-Pumped Extra-cavity-doubled Green Laser

作　　者：伊肖静[1] 杨超[1] 陈檬[1] 李港[1] 

机构地区：[1]北京工业大学激光工程研究院,北京100124

出　　处：《量子光学学报》2012年第2期217-222,共6页Journal of Quantum Optics

基　　金：北京市教委项目(KM201010005033)

摘　　要：为满足激光加工、激光彩色显示、数据存储、医疗卫生和科研等领域对绿光激光器的需要,研制了一台高倍频效率、窄脉宽侧面泵浦腔外倍频的YAG/LBO绿光激光器。分析并计算了腔外最佳聚焦参数,确定了透镜的最佳聚焦焦距。实验中,利用808nm激光二极管侧面泵浦Nd:YAG晶体,使用BBO晶体进行加压式调Q,采用四分之一波片补偿Nd:YAG晶体的热退偏,最终实现了重复频率1kHz、输出功率10.7W的1 064nm输出,最大单脉冲能量为10.7mJ。在此基础上,采用Ⅰ类温度相位匹配LBO晶体对基频光进行腔外倍频,获得了重复频率1kHz、脉宽21ns、最大输出功率6.04W的532nm准连续绿光输出,倍频效率高达59.3%。To meet the demand in the fields of laser color display,laser processing,optical data storage,laser medical and scientific research,an efficient narrow pulse width diode-side-pumped extra-cavity-doubled green Nd:YAG/LBO laser has been developed successfully.We have analyzed and calculated the best focus parameters,and determined the best focal length of the lens.In our experiment,fundamental frequency output at 1 064 nm with average power 10.7 W and single pulse energy 10.7 mJ at repetition rate of 1 kHz are obtained,by using LD side-pumping technology and electro-optic Q-swith technology.In order to compensate for thermal depolarization,we added a quarter-wave plate in the cavity.On the basis of this,we do the exta-cavity-doubled experiment,usingⅠ-type temperature phase matched LBO crystal,which get a 6.04 W green light output.The pulse-width is 21 ns at repetition rate of 1 kHz.The optical frequency conversion efficiency from IR to green laser is up to 59.3%.

关 键 词：全固态激光器 倍频效率 绿光激光器 LBO晶体 温度相位匹配 

分 类 号：O431[机械工程—光学工程]