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Ⅰ.基本概念 1.引言根据定义,红外探测器是一种器件,它所产生的电输出可用来衡量入射红外辐射。探测器一字不仅表示响应元件,并且也表示所有其他元件(如窗、面积限制孔经、杜瓦瓶、内反射器等),而从制造厂家收到探测器时这些元件就是探测器的一个组合部分。如果制造厂家在出售探测器时包括一放大器或阻抗变换器,那么这些元件也应该被认为是探测器的一部分。例如,人们可以购买带有以下构件的Ge:Hg探测器,即带有一很窄的视场和一安装在杜瓦瓶散热器上的场效应晶体管前置放大器。因此,根据定义,早先所提到的前置放大器、杜瓦瓶和其他元件就是探测器的组合部件。 2.辐射场的特性
I. Basic Concepts 1. Introduction By definition, an infrared detector is a device that produces an electrical output that can be used to measure incident infrared radiation. The detector word means not only the response element, but also all the other elements (such as windows, area-limiting apertures, Dewar, internal reflectors, etc.) which are the detectors when it is received from the manufacturer Part of the portfolio. If the manufacturer includes an amplifier or impedance transformer when selling the detector, these components should also be considered part of the detector. For example, one could purchase a Ge: Hg detector with a narrow field of view and a field effect transistor preamplifier mounted on a Dewar flask cooler. Therefore, by definition, the preamplifiers, dewar, and other components mentioned earlier are combined components of the detector. 2 radiation field characteristics