基于Marx发生器的快速Q开关驱动电路设计

发布时间：2018-01-15 10:34

  本文关键词：基于Marx发生器的快速Q开关驱动电路设计　出处：《红外与激光工程》2017年09期 　论文类型：期刊论文

  更多相关文章： 调Q Marx发生器 功率MOS管 高压脉冲

【摘要】：针对电光Q开关要求速度快的特点,提出基于Marx发生器的高压快速调Q驱动电路的设计方法。利用高压模块产生一级高压为并联电容充电,采用变压器隔离驱动8路MOS管。当触发信号引入时,功率MOS管导通使电容串联同时放电,从而电压倍增获得快速的高压脉冲。实验结果表明:通过该方法获得了上升沿12 ns,幅值3 000~4 000 V数字可调的高压脉冲波形。相比于传统脉冲变压器法的波形,上升时间减小了近35 ns。此调Q电路已应用于激光二极管(LD)泵浦的固体Nd:YAG激光器中,且长期稳定工作。
[Abstract]:In view of the high speed of electro-optic Q switch, a design method of high voltage fast Q switch drive circuit based on Marx generator is put forward. The high voltage module is used to generate one stage high voltage to charge the shunt capacitor. Eight MOS transistors are driven by transformer isolation. When the trigger signal is introduced, the power MOS transistors can discharge the capacitors in series at the same time. A fast high voltage pulse is obtained by voltage doubling. The experimental results show that the rising edge is 12 ns by this method. A digitally adjustable high voltage pulse waveform with a amplitude of 3 000 ~ 4 000 V compared with that of the conventional pulse transformer method. The rise time is reduced by about 35ns. The Q-switched circuit has been applied to the solid-state Nd:YAG laser pumped by laser diode (LD) and has been working stably for a long time.
【作者单位】： 北京空间机电研究所;
【分类号】：TN24
【正文快照】： 0引言采用电光调Q技术可有效提高激光脉冲峰值功率并压缩脉宽[1-4],而Q开关速度是影响激光器电光效率的一个重要因素,因此如何设计调Q驱动电路提高Q开关速度一直备受关注[5-9]。常用的电光调Q脉冲产生方法有三种[4,8]:脉冲变压器法、高频金属陶瓷三极管法和雪崩三极管法。脉冲，

本文编号：1427975