红外与激光工程, 2016, 45 (11): 1105008, 网络出版: 2017-01-20
基于内腔的调Q锁模光参量振荡器的研究
Q-switched mode-locking optical parametric oscillator with intra-cavity
调Q锁模 内腔光参量振荡 同步泵浦 Q-switched mode-locking intra-cavity optical parametric oscillator synchronously pumping
摘要
为了实现内腔型光参量振荡器(OPO)的调Q锁模脉冲输出, 通过设计并匹配OPO谐振腔和基频激光腔的腔长, 满足了同步泵浦条件, 最终在实验上得到了信号光的调Q锁模输出; 在实验中, 采用氙灯泵浦Nd: YAG作为基频激光, 以KTP晶体为非线性转换介质, 采用电光开关作为调Q手段, 测量了OPO的近红外信号光的输出波形、输出能量、光谱构成等输出特性。在泵浦能量12.8 J、调制频率20 kHz时, 得到了锁模深度为100%的信号光输出, 并发现信号光锁模脉冲重复率依赖于基频激光; 得到了调Q锁模信号光输出能量随泵浦能量、电光调制频率的变化关系。
Abstract
By matching the length of the OPO cavity and the fundamental laser cavity, the Q-switched mode-locking intra-cavity Optical Parametric Oscillator (OPO) was realized. The design of fundamental laser and OPO cavity proved synchronously pumping and the Q-switched mode-locking signal pulse was experimentally obtained. The signal profile, output energy and spectroscopy were also measured in experiment. It is concluded that the repetition of signal mode-locking pulse depends on the fundamental and the depth of mode lock can reach 100% with 12.8 J pump energy and 20 kHz electro-optical (EO) repetition. The output energy of signal light depends on the pump energy and EO repetition.
王静, 梁健, 宋朋, 张海鹍, 周城. 基于内腔的调Q锁模光参量振荡器的研究[J]. 红外与激光工程, 2016, 45(11): 1105008. Wang Jing, Liang Jian, Song Peng, Zhang Haikun, Zhou Cheng. Q-switched mode-locking optical parametric oscillator with intra-cavity[J]. Infrared and Laser Engineering, 2016, 45(11): 1105008.
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