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通常只有使用较为昂贵、精密的实验设备才能获得 MCT探测器响应波长的偏移量 ,才可确定 MCT探测器 Franz- Keldysh(以下简写为 F- K)效应的强度。提出一种表征 MCT探测器 F- K效应有效强度的简易方法 ,即用 MCT探测器在零偏压及反偏压时的输出电压比来表征其 F- K效应有效强度的强弱。实验结果证实了这种方法有效、可行。
The intensity of the MCT detector Franz-Keldysh (hereafter abbreviated as F-K) effect can usually only be determined by using more expensive and sophisticated experimental equipment to obtain the offset of the MCT detector response wavelength. A simple method to characterize the effective strength of the F-K effect of MCT detector is proposed. The effective strength of F-K effect is characterized by the output voltage ratio of the MCT detector at zero bias and reverse bias. The experimental results confirm that this method is effective and feasible.