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Progress in resonator quantum well infrared photodetector (R-QWIP) focal plane arrays

机译:谐振腔量子阱红外光电探测器(R-QWIp)焦平面阵列研究进展

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摘要

In this work, the performance of a 640 X 512 long-wavelength resonant quantum well infrared photodetector (R-QWIP) focal plane array (FPA) was evaluated as a function of operating temperature, bias, and photon flux using an F/2.2 optic. From these FPA measurements an assessment of the dark current, noise, conversion efficiency and noise-equivalent temperature difference is provided herein. Histogram results are used to support a statistical interpretation of operability and non-uniformity across the R-QWIP FPA. In addition, single pixel devices fabricated from the same wafer lot enabled supplemental noise gain and spectral response measurements. The spectral response of this R-QWIP structure was confirmed to peak around 8.3 microns with a spectral bandwidth or approximately 1 micron (full-width half maximum) and the noise gain measurements were used to provide an estimation of the expected external quantum efficiency (conversion efficiency = quantum efficiency ⁄ gain).
机译:在这项工作中,使用F / 2.2光学器件评估了640 X 512长波长共振量子阱红外光电探测器(R-QWIP)焦平面阵列(FPA)的性能与工作温度,偏置和光子通量的关系。 。根据这些FPA测量,本文提供了暗电流,噪声,转换效率和等效噪声温度差的评估。直方图结果用于支持对R-QWIP FPA的可操作性和不均匀性的统计解释。此外,由同一晶圆制造的单个像素器件可实现补充噪声增益和光谱响应测量。确认此R-QWIP结构的光谱响应在8.3微米处达到峰值,并具有约1微米的光谱带宽(全宽一半最大值),并且使用噪声增益测量值来估计预期的外部量子效率(转换)效率=量子效率⁄增益)。

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