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本文在阐明多级空间滤波器像传递对改善光束质量作用的同时,对滤波小孔的选择进行了细致的理论探讨和数值计算。并对多级空间滤波器的景深提出了新的观点。对滤波器的精调提出了一套新的实验技术。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.
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