红外辐射探测器通常用于某个频带范围。通常它是中红外（３～５μｍ）和远红外（８～１４μｍ）频段的一个大气窗口范围。另一重要情况是单色激光辐射探测。同时还要求探测器在宽频谱范围内具有预期的灵敏度特性。此类需要之一是激光告警探测器。这种探测器在宽频谱范围（包括 Infrared radiation detectors are usually used in a range of frequency bands. It is usually an atmospheric window in the mid-infrared (3 to 5 μm) and far-infrared (8 to 14 μm) bands. Another important case is monochromatic laser radiation detection. It also requires the detector to have the desired sensitivity characteristics over a wide spectrum of frequencies. One such need is a laser warning detector. This detector is in a wide spectral range (including