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Infrared and Laser Engineering, Volume. 52, Issue 9, 20220890(2023)

Spectral responsivity of mosaic SWIR detectors

Qingjun Liao, Xiaoning Hu*, Aibo Huang, Honglei Chen, Zhenhua Ye, and Ruijun Ding
Author Affiliations
  • Key Laboratory of Infrared Imaging Materials and Detectors, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (11)
    Equations (5)
    References (18)
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    Figures & Tables(11)
    2 000×256 mosaic Hg1-xCdxTe SWIR detector

    Fig. 1. 2 000×256 mosaic Hg1-xCdxTe SWIR detector

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    Typical relative spectral response curve of the Hg1-xCdxTe SWIR detector

    Fig. 2. Typical relative spectral response curve of the Hg1-xCdxTe SWIR detector

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    Distribution of blackbody radiation photon flux density on 1# filter

    Fig. 3. Distribution of blackbody radiation photon flux density on 1# filter

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    Distribution of blackbody radiation photon flux density on 5# filter

    Fig. 4. Distribution of blackbody radiation photon flux density on 5# filter

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    Transmittance curve of the 5# filter

    Fig. 5. Transmittance curve of the 5# filter

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    Relative spectral response curve of the SWIR detectors

    Fig. 6. Relative spectral response curve of the SWIR detectors

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    Spectral responsivity curve of SWIR detectors

    Fig. 7. Spectral responsivity curve of SWIR detectors

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    Spectral response nonuniformity of SWIR detectors

    Fig. 8. Spectral response nonuniformity of SWIR detectors

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    • Table 1. Specification of the filter

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      Table 1. Specification of the filter

      FilterCenter wavelength/nm FWHM/ nm Peak transmittance Blocking wavelength/nm OD
      1#12251050%190-3200OD3
      2#16701060%200-3500OD3
      3#20621060%190-3500OD3
      4#24201060%190-3500OD3
      5#24705070%100-30000OD3

    • Table 2. Comparison of output signal with different filters

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      Table 2. Comparison of output signal with different filters

      Filter Blackbody temperature/℃ODWavelength range of integration/μmPhoton numberOutput voltage/V
      1#140-1.22-1.23356.02×10−5
      OD31-2.6026644.59×10−3
      2#140-1.665-1.6753289975.67×10−1
      OD31-2.603316105.71×10−1
      3#140-2.057-2.0675494909.47×10−1
      OD31-2.605521039.51×10−1
      4#80-2.415-2.4253117315.37×10−1
      OD31-2.603118905.37×10−1
      5#80-2.445-2.49522338363.85
      OD31-2.6022340743.85

    • Table 3. Comparison of filter output signal with diffe-rent out-of-band ODs and FWHM

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      Table 3. Comparison of filter output signal with diffe-rent out-of-band ODs and FWHM

      Center wavelength/nm FWHM/ nm ODWavelength range of integration/μm Photon number Output voltage/V
      122510-1.22-1.23356.02×10−5
      OD31-2.6026644.59×10−3
      OD61-2.60386.50×10−5
      122550-1.20-1.251813.11×10−4
      OD31-2.6028044.83×10−3
      OD51-2.602113.63×10−4
      1250100-1.20-1.36461.11×10−3
      OD31-2.6032715.64×10−3
      OD51-2.606721.16×10−3
      1300200-1.20-1.442537.33×10−3
      OD31-2.6068751.18×10−2
      OD41-2.6045147.78×10−3
      OD51-2.6042777.37×10−3
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    Qingjun Liao, Xiaoning Hu, Aibo Huang, Honglei Chen, Zhenhua Ye, Ruijun Ding. Spectral responsivity of mosaic SWIR detectors[J]. Infrared and Laser Engineering, 2023, 52(9): 20220890

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    Paper Information

    Category: Infrared technology and application

    Received: Dec. 14, 2022

    Accepted: --

    Published Online: Oct. 23, 2023

    The Author Email: Hu Xiaoning (xnhu@mail.sitp.ac.cn)

    DOI:10.3788/IRLA20220890

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology