一种近红外探测器的光谱响应率测量

详细信息

Measurement of spectral responsivity of an infrared detector

Remote Sensing Department,Anhui Institute of Optics and Fine Mechanics,CAS,Hefei 230031,China

摘要: 对近红外辐射功率光谱绝对响应率的定标技术进行了研究。设计了一种制冷扩展波长型的InGaAs探测器，为了使其能够作为功率传递的标准探测器工作在（1.2～2.5）μm波长范围，对探测器的光谱响应率进行了测量。首先在1260nm波长下进行绝对功率传递的标定试验，然后用基于红外单色仪的光谱比较系统（SCF）测量了探测器的相对光谱响应率。结合2个步骤的数据，最终可以得到探测器的绝对光谱响应率。
- 光谱响应率 /
- 近红外探测器 /
- 探测器定标
Abstract: 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.
- spectral responsivity /
- near-infrared detector /
- detector calibration