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Electrically switchable electro-optic filters for spectral line emission detection

机译：用于光谱线发射检测的电可切换电光滤光片

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摘要

Remote detection of spectral line emission is an important capability in a number of areas, including defense and environmental science. In this paper, we report on a mechanism for spectral line emission detection that is not based on narrow bandpass filters or hyperspectral imagers, but is instead based on the use of switchable spectral filters. The use of a switchable filter enables a single sensor to perform remote sensing tasking in a broad passband, while also detecting emission in a particular spectral line. In this case, the switchable spectral filter studied is a holographic polymer dispersed liquid crystal (HPDLC) reflection grating. The concept is demonstrated through modeling a sensor with an integrated HPDLC filter and building a detection algorithm capable of detecting spectral line emission. The modeling framework is built upon four components: the background scene, the spectral line source, the HPDLC filter, and the sensor. Results from the model show probability of detection and probability of false alarm for spectral line sources of varying strength for a particular background scene. (C) 2021 Optical Society of America
机译：光谱线发射的远程检测是包括国防和环境科学在内的许多领域的一项重要能力。在本文中，我们报告了一种光谱线发射检测机制，它不是基于窄带通滤波器或高光谱成像仪，而是基于可切换光谱滤波器的使用。可切换滤波器的使用使单个传感器能够在宽通带内执行遥感任务，同时还能检测特定光谱线中的发射。在这种情况下，所研究的可切换光谱滤波器是全息聚合物分散液晶（HPDLC）反射光栅。这一概念通过对带有集成HPDLC滤波器的传感器建模和建立能够检测谱线发射的检测算法来演示。建模框架由四部分组成：背景场景、谱线源、HPDLC滤波器和传感器。该模型的结果显示了特定背景场景中不同强度谱线源的检测概率和虚警概率。（2021）美国光学学会

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  • 来源
    《Applied optics》 |2021年第4期|共9页
  • 作者

    Pelleg Ben; Steinhauser Carl; Pullen Marquise; Linden Joseph; Fontecchio Adam;

  • 作者单位

    Johns Hopkins Univ Appl Phys Lab 11100 Johns Hopkins Rd Laurel MD 20723 USA;

    Johns Hopkins Univ Appl Phys Lab 11100 Johns Hopkins Rd Laurel MD 20723 USA;

    Drexel Univ Dept Elect &

    Comp Engn 3141 Chestnut St Philadelphia PA 19104 USA;

    Johns Hopkins Univ Appl Phys Lab 11100 Johns Hopkins Rd Laurel MD 20723 USA;

    Drexel Univ Dept Elect &

    Comp Engn 3141 Chestnut St Philadelphia PA 19104 USA;

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