20mm孔径重复频率等离子体电光开关研究  

Research on Repetition Rate Plasma Pockels Cell with 20 mm Aperture

作　　者：张雄军[1] 吴登生[1] 张君[1] 郑建刚[1] 田晓琳[1] 

机构地区：[1]中国工程物理研究院激光聚变研究中心,四川绵阳621900

出　　处：《光学学报》2010年第6期1772-1775,共4页Acta Optica Sinica

摘　　要：等离子体普克尔盒可以采用薄晶体,是大口径平均功率激光器理想的光开关器件。采用有限元方法,分析了20mm口径重复频率等离子体电光开关的热光效应,模拟计算了在平均功率负荷下,3mm厚的DKDP晶体由于热致双折射引起的退偏损耗为0.16%。采用电容分压技术,实现了基于DKDP晶体的等离子体电光开关的单脉冲驱动,通过针对重复频率等离子体普克尔盒的优化设计,研制完成了Φ20mm口径、10Hz重复频率等离子体电光开关样机,静态透射率97.2%,开关效率99.8%,开关上升时间11ns。Plasma Pockels cell,which can use a thin crystal to perform the uniform electro-optical effect,is an ideal component as average-power optical switch with large aperture.With average power load,the thermal effect of the DKDP crystal is analyzed by use of finite element methods.With 5 J/10Hz laser irradiation,the depolarization loss on 3 mm thickness DKDP is 0.16%.A repetition rate plasma Pockels cell of 10 Hz with Φ20mm aperture has been fabricated.It is optimized with the limited space of repetition rate diode pumped laser.The specificationes of the plasma Pockels cell are static transition of 97.2%;switching efficiency of 99.8%,and the switch rising time of 11 ns.

关 键 词：光学器件 电光开关 等离子体普克尔盒(PPC) 重复频率 

分 类 号：TN242[电子电信—物理电子学]