WANG Ji, ZHENG Xiao-bing, ZHANG Lei, LIN Zhi-qiang. Measurement of spectral responsivity of an infrared detector[J]. Journal of Applied Optics, 2007, 28(3): 313-316.
Citation: WANG Ji, ZHENG Xiao-bing, ZHANG Lei, LIN Zhi-qiang. Measurement of spectral responsivity of an infrared detector[J]. Journal of Applied Optics, 2007, 28(3): 313-316.

Measurement of spectral responsivity of an infrared detector

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  • Corresponding author:

    WANG Ji

  • The calibration technology for absolute spectral responsivity of the nearinfrared radiation power is investigated. An extended infrared-InGaAs (EIRIGA) photodiode was designed. The spectral responsivity of the EIR-IGA detector was measured to allow it to be a standard power-transfer detector working in the wavelength range of 1.2μm~2.5μm. This near-infrared detector was also calibrated by cryogenic radiometers before. The absolute responsivity of the EIR-IGA detector was calibrated in 1260nm, and the continuous relative spectral responsivity was measured with a new IR SCF system based on IR monochromator. The absolute spectral responsivity of the detector is obtained at last with the two steps.

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