准相位匹配PPKTP晶体连续倍频13mW绿光输出  

13mW-Continuous-Wave Green Light Output by Quasi-Phase-Matched Frequency Doubling in Periodically Poled KTP

作　　者：付伟佳[1] 于建[1] 康玉琢[1] 倪文俊[1] 陈亚南[1] 桑梅[1] 李世忱[1] 胡永岚 师瑞泽 

机构地区：[1]天津大学精密仪器与光电子工程学院光电信息技术科学教育部重点实验室,天津300072 [2]中材人工晶体研究院,北京100018

出　　处：《光学学报》2007年第6期1063-1066,共4页Acta Optica Sinica

基　　金：国家自然科学基金(60377018)资助项目

摘　　要：采用高压脉冲电场极化,通过电光效应实时监控、倍频通光二维监控等手段的应用,制备出周期为9μm、长为8 mm、宽为3 mm、厚为1 mm的周期极化KTiOPO4晶体(PPKTP);倍频通光实验中,当波长1064 nm的基频光功率为1 W时,得到了功率为13.5 mW的532 nm连续倍频绿光输出,单通倍频转换效率为1.35%,归一化转换效率为1.69%/(W.cm),接近理论最大值。A periodically poled KTiOPO4 （PPKTP） for second harmonic generation （SHG） with 9 μm period, 8 mm length, 3 mm width and 1 mm thickness has been successfully fabricated by applying an external electic field of high pulsed voltage. During the program, the real time monitoring measures such as electro-optical effect method, second harmonic generation two-dimensional method were used. 13.5 mW of 532 nm second harmonic generation green light was obtained pumped by 1 W, 1064 nm fundamental wave. The single-pass second harmonic generation conversion efficiency was 1.35% and the normalized conversion efficiency was 1.69% /（W·cm）, which was close to the maximal theoretic value.

关 键 词：非线性光学 准相位匹配 周期极化 倍频 PPKTP晶体 

分 类 号：O437.1[机械工程—光学工程]