Hemsing W F
Los Alamos Scientific Laboratory, P. O. Box 1663, Los Alamos, New Mexico 87545.
Rev Sci Instrum. 1979 Jan;50(1):73. doi: 10.1063/1.1135672.
The VISAR (velocity interferometer system for any reflector) has become a common tool used in experiments where high surface velocities must be measured. A modification that uses previously wasted interferometer light to more than double output signals and to cancel noise is described. Laser power is used more efficiently, VISAR performance in the presence of intense target self-light is improved, and only two data signals are required instead of the usual three or four. Effects of changing light intensity and fringe visibility are eliminated using a novel detection system with a simplified solution for velocity.
速度干涉仪系统（VISAR，用于任意反射体的速度干涉仪系统）已成为在必须测量高表面速度的实验中常用的工具。本文描述了一种改进方法，该方法利用先前被浪费的干涉仪光，使输出信号增加一倍以上并消除噪声。激光功率得到了更有效的利用，在存在强烈目标自发光的情况下，VISAR的性能得到了改善，并且只需要两个数据信号，而不是通常的三或四个。使用一种新颖的检测系统消除了光强和条纹可见度变化的影响，该系统具有简化的速度求解方案。
