光学学报, 2007, 27 (6): 1063, 网络出版: 2007-06-08
准相位匹配PPKTP晶体连续倍频13 mW绿光输出
13 mW-Continuous-Wave Green Light Output by Quasi-Phase-Matched Frequency Doubling in Periodically Poled KTP
非线性光学 准相位匹配 周期极化 倍频 PPKTP晶体 nonlinear optics quasi-phase matching periodic poling second harmonigeneration PPKTP crystal
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9 μm、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。
Abstract
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.
付伟佳, 于建, 康玉琢, 倪文俊, 陈亚南, 桑梅, 李世忱, 胡永岚, 师瑞泽. 准相位匹配PPKTP晶体连续倍频13 mW绿光输出[J]. 光学学报, 2007, 27(6): 1063. 付伟佳, 于建, 康玉琢, 倪文俊, 陈亚南, 桑梅, 李世忱, 胡永岚, 师瑞泽. 13 mW-Continuous-Wave Green Light Output by Quasi-Phase-Matched Frequency Doubling in Periodically Poled KTP[J]. Acta Optica Sinica, 2007, 27(6): 1063.