280mm×280mm口径单脉冲过程电光开关

用于高功率惯性约束聚变(ICF)激光驱动器的大口径电光开关均采用等离子体电极泡克耳斯盒。与传统的等离子体电极电光开关原理不同,单脉冲过程驱动电光开关没有独立的大电流等离子体发生单元,而只是通过具有较高幅值的正负开关脉冲完成对大口径电光开关的驱动。介绍单脉冲过程驱动等离子体电极泡克耳斯盒电光开关的设计,并建立280 mm×280 mm口径电光开关实验平台,利用连续激光器测试了电光开关特性,实验测得该电光开关中心处开关效率为99.3%,开关上升时间为90 ns。

Electro-Optical Switch with 280 mm×280 mm Aperture Drived by One-Pulse Process

The large aperture optical switch used in the high-power laser driver for inertial confinement fusion adopts the plasma electrode Pockel cell. Being different with the regular plasma electrode electrooptical switch, the one-pulse-process (OPP) driving electrooptical switch is driven only through the positive and negative switching pulses with relatively high voltage, without isolated large current plasma generator. The design of the OPP electrooptical switch is described, and the experimental setup of the electrooptical switch with 280 mm×280 mm aperture is established. The testing results of the electrooptical switch with CW laser show the switch efficiency of this electrooptical switch is 99.3%, and the switch rising time is 90 ns.