Compensation for the thermal effect in the second-harmonic generation of a Q-switched nanosecond-kilohertz Nd:YVO4 laser
Compensation for the thermal effect in the second-harmonic generation of a Q-switched nanosecond-kilohertz Nd:YVO4 laser
复制标题
调Q纳秒千赫Nd:YVO4激光器二次谐波热效应补偿
DOI：
10.1007/s10043-012-0053-3
复制
发表时间：
2012
期刊：
影响因子：
1.2
通讯作者：
and Kosuke Uchida
中科院分区：
文献类型：
--
作者：
Tetsuo Harimoto;Boku Yo;and Kosuke Uchida
本文报道了高重复频率调Q Nd：YVO4激光器临界相位匹配二次谐波产生中相位匹配条件与环境温度之间的定量关系。通过相对于非线性光学晶体的周围温度适当地改变相位匹配角，可以有效地补偿热效应。实验上实现了1064 nm基波到532 nm二次谐波的稳定转换，转换效率高达70%。
We report the quantitative relationship between the phase-matching condition and the surrounding temperature in a critical phase-matching second-harmonic generation of a Q-switched Nd:YVO4laser with a high repetition rate. The thermal effect can be effectively compensated for by appropriately changing the phase-matching angle with respect to the surrounding temperature of a nonlinear optical crystal. A stable wavelength conversion from the 1064 nm fundamental to the 532 nm second harmonic in a type-I critical phase-matching lithium triborate crystal is experimentally achieved and the corresponding conversion efficiency up to 70% is obtained.