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本文以PbS探测器为例谈红外探测器的D~*参数测量。内容包括:D~*系统;系统K值;系统D~*曲线的马鞍形特性;系统标准化的建议。一、D~*系统如图1所示,D~*测量系统主要由黑体、黑体控温器、辐射调制器、光电转换电路、选频放大器等组成。除用来测量黑体温度的电位差计和测量探测器信号及噪声电压的选频放大器外,其余部件可自行设计制造。根据黑体发射辐射的方向不同,笔者设计了三
In this paper, PbS detector as an example to talk about the infrared detector D ~ * parameter measurement. Contents include: D ~ * system; system K value; saddle-shaped characteristic of system D ~ * curve; system standardization suggestion. First, the D ~ * system shown in Figure 1, D ~ * measurement system mainly by the black body, black body temperature control, radiation modulators, photoelectric conversion circuit, frequency selective amplifier and other components. Except for the potentiometer used to measure the temperature of the black body and the frequency selective amplifier for measuring the signal of the detector and the noise voltage, the other parts can be designed and manufactured by themselves. According to the different direction of the black body emission radiation, the author designed three