红外与毫米波学报, 2015, 34 (6): 0684, 网络出版: 2016-01-19
基于角度切割MgO:PPLN晶体的高平均功率、稳定的连续波单振荡光学参量振荡器
Stable, high-average-power, continuous-wave singly resonant optical parametric oscillation based on angle-polished MgO:PPLN
连续波 单谐振光学参量振荡器 角度切割 稳定 continuous-wave singly resonant optical parametric oscillator (OPO angle-polished stable
摘要
报道了一台稳定的、高平均功率连续波光学参量振荡器，该振荡器为单谐振环形腔结构，参量晶体为角度切割的掺氧化镁周期性极化铌酸锂（MgO:PPLN），由一台波长为1064 nm的Nd:YVO4固态激光器泵浦.在9.8 W的泵浦功率下，可得到波长3 069.1 nm的闲频光功率2.15 W，其泵浦-闲频光转换效率达21.9%.得益于腔内寄生振荡的减弱以及热自稳效应，振荡器的输出功率在30 min内的稳定性优于0.19%均方根偏差（rms）.
Abstract
We report a stable, high-power, continuous-wave (cw) optical parametric oscillator (OPO) pumped at 1064nm by a commercial Nd:YVO4 solid-state laser. The oscillator is singly resonant, based on an angle-polished MgO-doped periodically poled LiNbO3 (MgO:PPLN) in a four-mirror ring cavity. Maximum output idler up to 2.15 W is achieved at 3069.1 nm with 9.8 W of pump power, corresponding to a pump-to-idler conversion efficiency of 21.9%. The device exhibits excellent power stability better than 0.19% rms over 30 minutes, which is related to the reduced intracavity residual reflections and thermal self-locking effect.
郑雄桦, 何广源, 焦中兴, 王彪. 基于角度切割MgO:PPLN晶体的高平均功率、稳定的连续波单振荡光学参量振荡器[J]. 红外与毫米波学报, 2015, 34(6): 0684. ZHENG Xiong-Hua, HE Guang-Yuan, JIAO Zhong-Xing, WANG Biao. Stable, high-average-power, continuous-wave singly resonant optical parametric oscillation based on angle-polished MgO:PPLN[J]. Journal of Infrared and Millimeter Waves, 2015, 34(6): 0684.
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