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

作　　者：王静[1] 梁健[2] 宋朋[1] 张海鹍[1] 周城[1] 

机构地区：[1]济南大学物理科学与技术学院,山东济南250022 [2]山东大学(威海)网络与信息管理中心,山东威海264209

出　　处：《红外与激光工程》2016年第11期45-48,共4页Infrared and Laser Engineering

基　　金：国家自然科学基金青年基金(61308057);山东省优秀中青年科学家科研奖励基金(BS2012DX003);济南大学科研基金(XKY1225)

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 k Hz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。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.

关 键 词：调Q锁模 内腔光参量振荡 同步泵浦 

分 类 号：TN242[电子电信—物理电子学]