“神光Ⅱ”主放大器角变反镜衰减曲线的精密测量

Precise Attenuation Measurement of Angular Variable Mirror Used in "Shenguang Ⅱ" Main Amplifiers

针对“神光Ⅱ”功率平衡控制的要求 ,提出了一种精密测量主放大器角变反镜 (AVM )衰减曲线的方法 ,并建立了一套计算机自动控制的测量装置 ,利用该装置达到了极限相对误差 0 .5 %的测量精度。

Aiming at power balance control in 'Shenguang Ⅱ', a means for precise attenuation measurement of angular variable mirror (AVM) used in main amplifiers are proposed, and a set of measurement equipment controlled by computer is established. Using this equipment, a limiting relative error 0.5% of measurement precision is achieved.