BASIC STUDY ON SPATIAL FILTER USED IN Nd-GLASS HIGH POWER LASER SYSTEM
钕玻璃高功率激光系统中的空间滤波器的基本研究

In this paper, image relaying of the spatial filters on the high power Nd-Glass laser system for improving brightness of laser beam is demonstrated. Detailed theoretical treatment and numerical calculation on selection of filtering pinholes are carried out. Finally, a new idea about the depth of field of spatial filter and several new experimental methods of adjusting spatial filters are suggested.