用一个声光器件在连续YAG激光器中实现同时调Q和锁模  

An Acoustic-optic Device for Simultaneous Q-Switching and Mode Locking in CW Nd:YAG Laser

作　　者：黄国标 王箭[2] 董沙雷[3] 

机构地区：[1]深圳激光技术应用所 [2]中山大学物理系 [3]华中理工大学光学工程系

出　　处：《激光与红外》1989年第5期20-24,共5页Laser & Infrared

摘　　要：研制成一种新型声光器件,它能在一个声光介质内形成相互正交的行波和驻波超声场,因此具有Q开关和调制锁模双重功能。若将之插入连续YAG激光器谐振腔内便可同时实现调Q/锁模运转。由于减少了一个声光元件,腔内插入损耗大大减小,从而使激光系统的输出特性获得显著改善,增加了调Q锁模光脉冲的输出功率,同时简化了激光系统。A new type of acoustic-optic device has been successfully developed which can form an ultrasonic field consisting of a travelling wave ultrasonic field perpendicular to a standing wave ultrasonic field in an acoustic-optic medium and therefore, possessing a double function of both Q-switching and mode locking. If it is placed in a CW Nd: YAG laser cavity Q-switching and mode locking can be performed simultaneously. The input loss in the cavity can be greatly reduced as the acousto-optic device is reduced to only one, resulting in a considerable improvement of the output characteristic of the laser system and an increase in the power of Q-switching/mode locking light pulse. The laser system is also simplified.

关 键 词：声光器件 YAG激光器 调Q 锁模 

分 类 号：TN248.13[电子电信—物理电子学]