本文以镜面反射成像理论为基础，提出了一种空间辐射致冷器表面热耦合视因子的积分解法。

Based on the theory of the specular image technique, a method of integral solution used to solve the view factors between the thermal coupling surfaces of a space radiant cooler is introduced.

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分析了影响增益饱和特性的几个因素：有源区截面积，顶层镜面反射率，泵浦功率，自发辐射因子。

Several factors affecting properties of gain saturation are analyzed, which are active region area, top mirror reflective, pump power, spontaneous emission factor,.

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