摘要
通过高压脉冲电场极化 ,制备了周期为 6 5 μm、长为 12mm、宽为 10mm、厚为 0 5mm的一阶准相位匹配周期性极化铌酸锂 ;由 1 1W连续 1 0 6 μmNd∶YAG激光器抽运 ,在 5°时产生了约 18mW、0 .5 32 μm的倍频连续绿光 ,其对应的二次谐波转换效率约为 1 6 % ,二次谐波的归一化转换效率约为 1 5 %cm- 1 W- 1 ,相当于 79%的周期性极化铌酸锂的理想非线性系数。
A first order quasi phase matched periodically poled LiNbO 3 (PPLN) for SHG with 6.5 μm period, 12 mm length, 10 mm width and 0.5 mm thickness has been successfully fabricated by applying an external electric field at room temperature from an high pulsed voltage generator. About 18 mW of CW 0.532 μm green light was obtained pumped by an 1.1 W of CW 1.064 μm Nd∶YAG laser with end coupling, which corresponds to 1.6% power conversion efficiency. The SHG normalized conversion efficiency is about 1.5% cm -1 W -1 , which shows 79% of the ideal nonlinear coefficient. A reasonable explanation of the experiment is given.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2002年第4期399-401,共3页
Acta Optica Sinica
基金
上海市科技发展基金
上海市教委重点学科项目基金
国家自学基金资助课题
