一种近红外探测器的光谱响应率测量  

Measurement of spectral responsivity of an infrared detector

作　　者：王骥[1] 郑小兵[1] 张磊[1] 林志强[1] 

机构地区：[1]中国科学院安徽光学精密机械研究所遥感室,合肥230031

出　　处：《应用光学》2007年第3期313-316,共4页Journal of Applied Optics

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1 260 nm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。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. 2 μm -2. 5 μm. This near-infrared detector was also calibrated by cryogenic radiometers before. The absolute responsivity of the EIR-IGA detector was calibrated in 1 260 nm, and the continuous relative spectral responsivity was measured with a new IR SCF system based on IR monocbromator. The absolute spectral responsivity of the detector is obtained at last with the two steps.

关 键 词：光谱响应率 近红外探测器 探测器定标 

分 类 号：O432[机械工程—光学工程]