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最近几年,热电探测器在光谱辐射、激光探测、测温和报警等方面得到广泛应用。这些辐射源常可分为单脉冲和连续脉冲辐射。而详细分析热电探测器的脉冲响应,对正确使用热电探测器,恰当选择τ_T、τ_e及电子线路的带宽有一定帮助。目前常用集总参数的模型分析热电探测器。这样就可忽略灵敏面以外的晶片、导线和焊点引起的热损耗。这种模型对于悬空型大面积可以近似处理。而对小面积和带衬底的器件
In recent years, pyroelectric detectors have been widely used in spectral radiation, laser detection, temperature measurement and alarm. These radiation sources can often be divided into single pulse and continuous pulse radiation. The detailed analysis of the impulse response of the pyroelectric detector is helpful for the correct use of the pyroelectric detector, proper selection of the τ_T, τ_e and the bandwidth of the electronic circuit. At present, models of lumped parameters are often used to analyze pyroelectric detectors. This neglects the thermal losses caused by wafers, wires, and solder joints other than the sensitive surface. This model can be approximated for large surface area. While for small area and substrate devices