CO_(2)激光对氧化钒成像设备干扰实验研究  

Experimental study of CO_(2) laser interference with VOximaging equipment

作　　者：邹前进 张恒伟 刘明菊 路亚旭 刘小虎 王东 陈育斌 ZOU Qian-jin;ZHANG Heng-wei;LIU Ming-ju;LU Ya-xu;LIU Xiao-hu;WANG Dong;CHEN Yu-bin(No.63891 Troops of PLA,Luoyang 471003,China;No.63893 Troops of PLA,Luoyang 471003,China)

机构地区：[1]63891部队,河南洛阳471003 [2]63893部队,河南洛阳471003

出　　处：《激光与红外》2024年第4期607-611,共5页Laser & Infrared

摘　　要：随着红外成像技术发展,非制冷氧化钒探测器在多个领域得到了应用,其在激光辐照下的热效应如何,也成为了当前研究方向之一。本文首先分析了氧化钒成像探测器结构和工作原理。其次开展了激光辐照饱和及点损伤条件下,106μm脉冲激光辐照氧化钒成像设备实验。在激光辐照饱和条件下,光斑中心像元出现饱和现象,激光辐照结束后,该像元响应较辐照前增加了约20个灰度;该像元周围像素出现了环状异常,非均匀性校正后探测器恢复正常;在激光辐照点损伤条件下,出现了圆环干扰效应,光斑中心像元出现了损伤,即使非均匀性校正也无法恢复;给出了相应激光功率密度。根据实验结果,对衍射效应进行了仿真,指出衍射、探测器热效应及热量“溢出”是导致探测器像元异常像素数大于辐照光斑的原因。本文对非制冷氧化钒探测器研制及干扰效应研究具有重要参考意义。Uncooled infrared detectors have been applied in several fields with the development of infrared imaging technology,and how their thermal effect under laser irradiation has become one of the current research directions.In this paper,the structure and working principle of VOx imaging detector are analyzed at firstly.Then,experiments of laser irradiation VOx uncooled IR imaging equipment under saturation and point damage by 10.6μmpulse laser is carried out.Under laser irradiation saturation conditions,saturation occurs in the center image element of the spot,and at the end of the laser irradiation,the response of this image element increases by about 20 grey levels compared to the pre irradiation period.The pixels around jamming spot center are abnormal corresponding,and return to normal after non uniformity correction;under laser irradiation point damage conditions,a circular interference effect occurred,and the pixels in the center of the jamming spot show damage,which could not be recovered even with non uniformity correction.And the corresponding laser power densities are given.Based on the experimental results,the diffraction effect is simulated,and it is pointed out that the diffraction,the thermal effect of the detector and the heat"overflow"are the reasons leading to the detector pixel anomaly larger than the irradiated spot.This paper is an important reference for the development of uncooled VOx detectors and the study of interference effects.

关 键 词：氧化钒成像设备 干扰 CO_(2)激光 实验 

分 类 号：TN248.5[电子电信—物理电子学] TN977