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首页> 外文会议>Technologies for optical countermeasures XV >In-band low-power laser dazzle and pixel damage of an uncooled LWIR thermal imager
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In-band low-power laser dazzle and pixel damage of an uncooled LWIR thermal imager

机译：未冷却的LWIR热像仪的带内低功率激光眩目和像素损坏

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摘要

Infrared imaging sensors are a vital component of modern military weapons and surveillance systems, which for land operations is dominated by uncooled thermal imagers using microbolometer array detectors. These sensors, just as for all electro-optical and infrared devices, are vulnerable to the ever-increasing threat of in-band laser weapons, which can perturb or destroy their operational effectiveness. Importantly, this can happen even for relatively low laser output power. In this article, we analyze the experimentally measured results of laser dazzle and subsequent damage on an uncooled long-wave thermal imager. The imager has a vanadium oxide microbolometer array of size 640×480 pixels. A tunable quantum cascade laser is used with power output less than 100mW and fixed at a wavelength of 10.6 micron. The laser power was increased in incremental steps with the imager positioned only a few meters away. We discovered that the pixels covered by the laser spot saturate, leading to damage from accumulated exposures of only a few seconds. Additionally, we recorded circular diffraction effects and blooming of the array. In summary, we observed that damage was inflicted to pixels on the microbolometer array well before any significant dazzling was achieved.
机译：红外成像传感器是现代军事武器和监视系统的重要组成部分，对于陆地作战，红外成像传感器主要是使用微测辐射热计阵列探测器的未冷却热成像仪。这些传感器，就像所有的光电和红外设备一样，容易受到带内激光武器威胁的不断增加的威胁，这可能会干扰或破坏其运行效率。重要的是，即使相对较低的激光输出功率也可能发生这种情况。在本文中，我们分析了在未经冷却的长波热成像仪上激光眩目和随后造成的损坏的实验测量结果。该成像仪具有尺寸为640×480像素的氧化钒微测辐射热计阵列。使用可调谐量子级联激光器，其功率输出小于100mW，并固定在10.6微米的波长处。仅在几米远的位置放置成像器，激光功率会逐步增加。我们发现被激光光斑覆盖的像素会饱和，从而导致仅几秒钟的累积曝光而造成的损坏。此外，我们记录了圆形衍射效应和阵列的起霜现象。总而言之，我们观察到在实现任何明显的眩目之前，已经对微辐射热计阵列上的像素造成了损害。

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  • 来源
    《Technologies for optical countermeasures XV》|2018年|107970F.1-107970F.11|共11页
  • 会议地点 Berlin(DE)
  • 作者

    G. D. Lewis; S. Chretien; C. N. Santos; M. Vandewal; B. Hackens;

  • 作者单位

    Royal Military Academy, CISS Department, Renaissancelaan 30, 1000-Brussels, Belgium;

    Royal Military Academy, SSMW Department, Renaissancelaan 30, 1000-Brussels, Belgium;

    Royal Military Academy, CISS Department, Renaissancelaan 30, 1000-Brussels, Belgium;

    Royal Military Academy, CISS Department, Renaissancelaan 30, 1000-Brussels, Belgium;

    Universite catholique de Louvain, Nanoscopic Physics, Place de l'Universite 1, 1348-Louvain-la-Neuve, Belgium;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    laser dazzling; infrared; laser damage; microbolometer;

    机译：激光使人眼花;乱；红外线;激光伤害；微测辐射热计;

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