激光对红外探测系统产生的二次辐射效应  

Effect of Second Radiation on Laser to Infrared Detection System

作　　者：张成 许宏[2] 赵万利[2] 王博宇 ZHANG Cheng;XU Hong;ZHAO Wan-li;WANG Bo-yu(Aircraft Design Research Institute in Shenyang of Aviation Industry,Shenyang,China;Science and Technology on Electro-Optical Information Security Control Laboratory,Tianjin,China)

机构地区：[1]航空工业沈阳飞机设计研究所,沈阳 [2]光电信息控制和安全技术重点实验室,天津

出　　处：《光电技术应用》2021年第4期33-36,共4页Electro-Optic Technology Application

摘　　要：运用理论分析和数值模拟方法,建立了光学系统结构件的受辐照加热模型,以及结构件和光学元件的红外辐射在焦平面上形成的照度分布模型。并据此编制了仿真计算软件。通过该软件计算结果分析了激光照射在红外光学系统上所造成的温升分布情况,以及由此产生的光学元件和结构件的二次辐射效应。对一种典型结构的光学系统温升效果进行了仿真计算,并探讨了二次辐射对探测器工作的影响。发现即使入射激光波长与红外探测系统的工作波段不匹配,仍然可能通过二次辐射对探测器的影响,明显降低该系统的探测效能。Based on theory analysis and numerical simulation method,a heating model on the irradiated structure component of optical system and an illuminance distribution model on infrared radiation from the structure and optical components on focal plane are built.On the basis,simulation software is compiled.Through the calculation results from the software,the distribution of temperature improved due to the laser irradiating the infrared optical system and the effect of second radiation of the optical and structure components are analyzed.The effect of temperature improved on an optical system with typical structure is performed simulation calculation,and the effect of second radiation to the detector is discussed・It is found that even the wavelength of incident laser is not matched to the operation wavelength of the infrared detection system,the detection efficiency can be reduced obviously by second radiation.

关 键 词：红外探测系统 二次辐射 温度分布 仿真模型 

分 类 号：TN215[电子电信—物理电子学]