LD泵浦Cr:YAG被动调Q内腔式SrWO_4锁模拉曼激光器实验研究  

Experiment Research on Laser-diode-pumped Cr:YAG Passively Q-switched Intracavity SrWO_4 Mode-locked Raman Laser

作　　者：贾海旭 

机构地区：[1]北京东方锐镭科技有限公司,北京100015

出　　处：《光电技术应用》2015年第6期40-44,共5页Electro-Optic Technology Application

摘　　要：采用LD泵浦Cr:YAG被动调Q的内腔式SrWO_4锁模拉曼激光器获得了稳定的、调制深度100%的调Q锁模拉曼脉冲。在泵浦功率5.2W时,获得了968mW的平均输出功率,泵浦光到拉曼光的转换效率为18.6%,调Q脉冲重复率51 kHz,脉冲宽度7ns,这是目前为止报道的内腔式SrWO_4拉曼激光器所获得的最大的转换效率,并对实验中出现的拉曼自锁模现象进行了分析。最后,对实验中基频光与拉曼光出现的偏振状态进行了相关研究,给出合理的解释。A laser-diode-pumped Cr：YAG passively Q-switched intracavity SrWO_4 mode-locked Raman laseris used to obtain stable Q-switched mode-locked Raman pulse of 100% modulation depth. An average output powerof 968 mW is obtained when the incident pump power is 5.2W, the conversion efficiency of pump to Raman laser is 18.6%.The Q-switched pulses with repetition rate of 51 kHz and pulse width of 7 ns is obtained. To our knowledge,this is the most efficient at present. And the forming reason of mode-locked Raman laser pulse in the experiment isanalyzed. The polarization mechanism is researched and reasonable explanations are analyzed.

关 键 词：激光器 内腔式锁模拉曼激光器 受激拉曼散射 钨酸锶(SrWO4)晶体 Cr:YAG被动调Q 偏振 

分 类 号：TN248.1[电子电信—物理电子学]