Effenberger F J, Boreman G D
Appl Opt. 1996 Feb 1;35(4):566-71. doi: 10.1364/AO.35.000566.
Detector noise limits the performance of signal-processing-in-the-element detectors. For detectors to be optimized, an expression for the signal and noise must be found. The results of the eigenmode solution to the charge transport problem are used to derive the power spectral density of the noise in analytic form. This result is then coordinated with a similarly obtained modulation transfer function to yield a frequency-dependent signal-to-noise ratio (SNR). The SNR is used to reveal performance trends over several ranges of detector parameters. The most important result is that the contact boundary velocity strongly controls the SNR. The optimum SNR condition occurs when the contacts are not perfectly ohmic but exhibit a partially blocking behavior.
探测器噪声限制了元件内信号处理探测器的性能。为了优化探测器，必须找到信号和噪声的表达式。电荷传输问题的本征模解的结果被用于以解析形式推导噪声的功率谱密度。然后将该结果与通过类似方法获得的调制传递函数相结合，以得到与频率相关的信噪比（SNR）。该信噪比用于揭示探测器参数在几个范围内的性能趋势。最重要的结果是接触边界速度强烈控制着信噪比。当接触不是完全欧姆性的而是呈现部分阻挡行为时，会出现最佳信噪比条件。
