主被动锁模脉冲氙灯抽运Nd：YAG激光器的研究  

Research of actively-passively mode-locked Nd:YAG laser pumped by pulse xenon lamp

作　　者：袁易君[1] 

机构地区：[1]宜春学院理工学院,宜春336000

出　　处：《激光技术》2011年第3期412-414,417,共4页Laser Technology

摘　　要：为了克服主动锁模脉冲能量低、被动调Q锁模稳定性差、锁模不完全的缺点,采用Cr^(4+):YAG和声光锁模器进行主被动联合锁模脉冲氙灯抽运的Nd:YAG激光器,实验验证和分析了Cr^(4+):YAG被动锁模,声光锁模器主动锁模及两者联合主被动锁模3种情况下输出脉冲的特性。结果表明,主被动联合锁模可得到200mJ输出能量、输出幅值和能量抖动小于±5%、锁模深度100%、脉宽小于450ps的1064nm锁模脉冲输出,腔外增加KTP倍频晶体,可得到约41%的转换效率的532nm稳定锁模脉冲输出。这一结果验证了主被动锁模技术的可行性,有利于锁模技术的进一步发展。In order to resolve the low output energy of active mode-locked laser and instability of passive mode-locked laser, Cr4＋ ：YAG passive mode-locker and aeousto-optic active mode-locker were used jointly for Nd：YAG laser mode-locking. The output characteristics of passively mode-locked by Cr4 ＋ ：YAG only, actively mode-locked by acousto-optic mode-locker only and mode-locked by Cr4 ＋ ： YAG and acousto-optic jointly were analyzed and compared through experiments. Results showed that the joint mode-locking method gave good resolution to the low output energy and stability, and the mode-lock amplitude and energy fluctuation were less than ＋ 5%, with the depth of mode locking of 100% , pulse width less than 450ps and output energy near 200mJ at 1064nm wavelength. Adding KTP crystal out of the cavity, the output conversion efficiency was about 41% at 532nm wavelength. The results show the possibility of actively-passively mode-locked technology and it is helpful for the development of mode-locking technology.

关 键 词：激光器 CR4+:YAG 声光锁模器 主被动锁模 抽运 

分 类 号：TN248.1[电子电信—物理电子学]