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Metallic cavity quantum well infrared photodetector for filter-free SF_6 gas imaging

机译：金属腔量子井红外光电探测器，用于无滤网SF_6气体成像

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摘要

Generally, for gas imaging, narrowing the response of the camera sensor around the target gas's absorption band would increase the imaging contrast. In this paper, A filter-free narrowband metallic cavity quantum well infrared photodetector is proposed. The metallic cavity is formed by Ti/Au film coating on the detector's mesa. The geometry of the cavity is properly designed to sustain cavity mode resonating at 10.6 μm. With strong resonance, the absorption efficiency of the embedded quantum well active layer maintains high level (～74%) even with a fairly low doping concentration (～ 1× 10~(17) cm~(-3)). And the bandwidth is as narrow as 0.22 μm. A waveguide model is presented and used to analyze the metal cavity quantum well infrared photodetector, and it is found that the metal film coating on the side wall played an important role in enhancing the resonance and narrowing the spectral line width.
机译：通常，对于气体成像，缩小相机传感器周围的响应目标气体的吸收带将增加成像对比度。 本文提出了一种无滤网窄带金属腔量子井红外光探测器。 金属腔由检测器的台面上的Ti / Au膜涂层形成。 腔的几何形状被适当地设计成维持在10.6μm的腔模式谐振。 具有强的共振，即使具有相当低的掺杂浓度（〜1×10〜（17）cm〜（3）），嵌入量子阱活性层的吸收效率也保持高水平（〜74％）。 带宽与0.22μm一样窄。 向波导模型提出并用于分析金属腔量子阱红外光探测器，并且发现侧壁上的金属膜涂层在增强谐振和缩小光谱线宽方面发挥了重要作用。

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  • 来源
    《Optical and quantum electronics》 |2021年第6期|313.1-313.10|共10页
  • 作者

    Xiaofei Nie; YiZhe Yin; Honglou Zhen; Xiaohao Zhou; Pingping Chen;

  • 作者单位

    State Key Laboratory of Infrared Physics Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai 200083 People's Republic of China University of Chinese Academy of Science Beijing 100049 People's Republic of China;

    State Key Laboratory of Infrared Physics Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai 200083 People's Republic of China Mathematics and Science College Shanghai Normal University Shanghai 200234 People's Republic of China;

    State Key Laboratory of Infrared Physics Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai 200083 People's Republic of China University of Chinese Academy of Science Beijing 100049 People's Republic of China;

    State Key Laboratory of Infrared Physics Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai 200083 People's Republic of China University of Chinese Academy of Science Beijing 100049 People's Republic of China;

    State Key Laboratory of Infrared Physics Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai 200083 People's Republic of China University of Chinese Academy of Science Beijing 100049 People's Republic of China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Infrared gas imaging; Quantum well; Metallic cavity; Narrowband;

    机译：红外气体成像;量子阱;金属腔;窄带;

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