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.
作者
马芳
李辉
谭荣清
石佳俊
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)
出处
《激光技术》
CAS
CSCD
北大核心
2019年第1期75-78,共4页
Laser Technology
关键词
激光技术
同步调制
机械调Q
射频CO2激光器
laser technique
synchronous modulation
mechanical Q -switched
radio frequency excitated CO 2 laser
