Laser trigger system for the Jupiter module

R. Paiva, S. Sundvold, G. Morelli, C. Powell, R. Hamil, J. Corley, P. Pankuch, K. Law, J. Alexander
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Abstract

A UV laser trigger system has been designed to trigger the eight SF/sub 6/ filled high voltage switches in the Jupiter module. The system is compact and modular allowing for approximately thirty lasers to be triggered simultaneously in the full Jupiter design. The laser will be kinematically mounted near the high voltage section to minimize the path length to the high voltage switches and decrease the sensitivity to misalignment. The laser system is specifically built for the purpose of triggering the Jupiter module. It is a 265 nm UV laser system designed to generate eight simultaneous laser pulses of 10 mJ each with a 13 nsec pulsewidth. A 1061 nm solid-state Nd:Cr:GSGG laser is frequency quadrupled with a two stage doubling process. The 1061 nm fundamental laser energy is frequency doubled with a type II KTP crystal to generate 530 nm energy. The 530 nm output is frequency doubled with a type I KD*P crystal to generate 265 nm energy. The 265 nm pulse is split into eight parallel channels with a system of partially reflecting mirrors. Low timing jitter and a stable energy output level for the system were achieved. The entire optical system was packaged in a rugged, sealed aluminum structure 10"/spl times/19"/spl times/2.75". The size of the laser electronics unit is 7"/spl times/8"/spl times/8".
木星模块的激光触发系统
设计了一种紫外激光触发系统,用于触发木星模块中的8个SF/sub / fill高压开关。该系统紧凑且模块化,允许在完整的木星设计中同时触发大约30个激光器。激光将被运动学地安装在高压部分附近,以尽量减少到高压开关的路径长度,并降低对不对准的灵敏度。激光系统是专门为触发木星模块而建造的。这是一个265 nm的紫外激光系统,设计用于同时产生8个10兆焦耳的激光脉冲,每个脉冲宽度为13秒。1061 nm Nd:Cr:GSGG固体激光器采用两级倍频工艺,频率翻了四倍。1061 nm的基本激光能量与II型KTP晶体频率加倍,产生530 nm的能量。530 nm的输出频率与I型KD*P晶体加倍,产生265 nm的能量。265 nm的脉冲通过部分反射镜系统分成8个平行通道。实现了系统的低时序抖动和稳定的能量输出。整个光学系统封装在坚固的密封铝结构中,10“/spl倍/19”/spl倍/2.75”。激光电子装置的尺寸为7"/倍/8"/倍/8"。
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