同步调制调Q射频波导CO_2激光器研究  

Study on synchronous modulation Q-switched RF excitated waveguide CO_2 laser

作　　者：马芳[1,2] 李辉 谭荣清[1,2] 石佳俊[1,2] MA Fang;LI Hui;TAN Rongqing;SHI Jiajun(Department of Advanced Laser and Probing Technology, Institute of Electronics, Chinses Academy of Sciences, Beijing 100190, China;School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China)

机构地区：[1]中国科学院电子学研究所先进激光与探测技术部,北京100190 [2]中国科学院大学电子电气与通信工程学院,北京100049

出　　处：《激光技术》2019年第1期75-78,共4页Laser Technology

摘　　要：为了斩断调Q脉冲拖尾,提高激光器电光效率,提出了一种在机械调Q射频激励波导CO2激光器中采用同步调制的激励方式。实验研究了同步调制信号对调Q脉冲拖尾长度、脉冲宽度、峰值功率和电光效率的影响。结果表明,当同步调制信号截断时刻为-80μs时,调制调Q脉冲拖尾长度最短,为23μs;当同步调制信号无激励时长为800μs时,电光效率最高且为3%。采用同步调制的激励方式可以在有效斩断脉冲拖尾的同时保持脉冲宽度基本不变,提高了激光器的峰值功率和电光效率。In order to cut off the Q-switched pulse trailing and improve the electro-optical efficiency,an exciting mode of synchronous modulation in a mechanical Q-switched radio frequency(RF)excited waveguide CO2laser was proposed.The effects of synchronous modulation signal on the tail length of Q-switched pulse,pulse width,peak power and electro-optical efficiency were studied experimentally.The results show that,when the cut-off time of synchronous modulation signal is-80μs,the tail length of modulation Q-switched pulse is the shortest of23μs.The electro-optical efficiency is the highest of3%when the non-excitation duration of synchronous modulation signal is800μs.The excitation mode of synchronous modulation can effectively cut off the pulse tail and keep the pulse width at the same time,and improve the peak power and electro-optical efficiency.

关 键 词：激光技术 同步调制 机械调Q 射频CO2激光器 

分 类 号：TN248.2[电子电信—物理电子学]