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本文的目的是要将非本征和本征红外光电导探测器的最终性能极限(以峰值光谱探测率D_(λp)＊表征的)作一比较。分析表明如下:(1)对于中等背景(φ_>～10~(13)光子/厘米~2·秒)本征探测器要求的冷却大大小于要达到给定D_(λp)＊的非本征探测器的冷却:(2)在减小背景时,通过冷却可达到最大的灵敏度,同时非本征探测器会获得优良的性能;(3)产生——复合噪声,而不是琼斯——纽奈斯脱噪声,确定了可能达到的灵敏度极限。(2)和(3)项的结论与其他作者的分析有出入。
The purpose of this paper is to compare the ultimate performance limits of extrinsic and intrinsic infrared photoconductive detectors, which are characterized by the peak spectral detection rate D λp *. The analysis shows the following: (1) The required cooling for the intrinsic detector for medium background (φ_> ~10 ~ (13) photons / cm ~ 2 · sec) is much less than the extrinsic detection to achieve the given D_ (λp) * The cooling of the device: (2) Maximum sensitivity through cooling with reduced background, while extrinsic detectors yield excellent performance; (3) Generation of compound noise rather than Jones- De-noise, to determine the sensitivity limit may be reached. The conclusions of items (2) and (3) are different from those of other authors.