Experimental research on VO2 thermal imager irradiated by CO2 laser

ZHANG Lai-ming; XU Dong-dong; QI Feng-jie; WANG Min; XIE Ji-jiang; GUO Jin; WU Jun-hui

doi:10.3788/OPE.20111902.0348

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Experimental research on VO₂ thermal imager irradiated by CO₂ laser

Article | 更新时间：2020-08-12

- Experimental research on VO₂ thermal imager irradiated by CO₂ laser
- Optics and Precision Engineering Vol. 19, Issue 2, Pages: 348-353(2011)
- 作者机构：
  
  1. 中国科学院长春光学精密机械与物理研究所激光与物质相互作用国家重点实验室,吉林长春,130033
  2. 中国科学院研究生院,北京 100049
  3. 中国人民解放军63880部队,河南洛阳 471003
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20111902.0348
  CLC： TN216;TN249
- Received：08 October 2010，
  
  Revised：30 October 2010，
  
  Published Online：22 February 2011，
  
  Published：22 February 2011
- 稿件说明：
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张来明, 徐东东, 亓风杰, 王敏, 谢冀江, 郭劲, 吴军辉. CO2激光辐照氧化矾热像仪的实验[J]. 光学精密工程, 2011,19(2): 348-353

ZHANG Lai-ming, XU Dong-dong, QI Feng-jie, WANG Min, XIE Ji-jiang, GUO Jin, WU Jun-hui. Experimental research on VO2 thermal imager irradiated by CO2 laser[J]. Editorial Office of Optics and Precision Engineering, 2011,19(2): 348-353
张来明, 徐东东, 亓风杰, 王敏, 谢冀江, 郭劲, 吴军辉. CO2激光辐照氧化矾热像仪的实验[J]. 光学精密工程, 2011,19(2): 348-353 DOI： 10.3788/OPE.20111902.0348.

ZHANG Lai-ming, XU Dong-dong, QI Feng-jie, WANG Min, XIE Ji-jiang, GUO Jin, WU Jun-hui. Experimental research on VO2 thermal imager irradiated by CO2 laser[J]. Editorial Office of Optics and Precision Engineering, 2011,19(2): 348-353 DOI： 10.3788/OPE.20111902.0348.

摘要

为了研究波段内激光辐照焦平面阵列热像仪时的性能表现

设计了一系列视场内辐照实验。理论上采用了平顶高斯函数和有限个复高斯函数之和模拟激光器输出的平顶型光束以及激光器输出镜和光路中各种光学元件构成的光阑

结合近轴光学系统的柯斯林光束衍射公式计算了激光光束的传递以及变换。在实验中

通过在光路中放置单透镜光学元件以及调节该元件和激光器与热像仪之间距离的方法实现了实验室激光光束对热像仪的有效干扰。实验结果表明

通过设计的光路

连续的低功率激光能够对热像仪成像形成干扰

激光光束在热像仪焦平面上形成的弥散斑能覆盖热像仪近30%的像元

使热像仪无法识别背景目标物。理论分析与实验结果相符。

Abstract

In order to research the performance of the laser on a focal plane array thermal imager in a wavelenth

several field range irradiation experiments were designed and the actual light path transformation of the laser beam was calculated and simulated with the corresponding beam path theoretical calculation model. In theoretical analysis

the flat-topping laser beam

optical stop formed by a laser output mirror and the optical elements in the light path were simulated by the flat-topping Gaussian function and the sum of a finite number of complex Gaussian functions

then the delivery and transformation of laser beam were calculated with the Collins diffraction formula of a paraxial optical system.In the laboratory

the laser beam disturbance on the thermal imager was implemented by placing the singlet and changing the distance between the optical element and the laser. Experimental results indicates that low power CW lasers could disturb the thermal imager and the disc of confusion on the focal plane could overlay almost approximate 30 percent of image cells.The conclusion shows that the theoretical calculation is coinciden with the experimental results well.

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references

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