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C-QWIP focal plane array development

机译：C-QWIP焦平面阵列开发

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摘要

ARL and L3-CE have been developing corrugated quantum well infrared photodetector (C-QWIP) technology for long wavelength applications. Several large format 1024 × 1024 C-QWIP focal plane arrays (FPAs) have been demonstrated. In this paper, we provide a detailed analysis on the FPA performance in terms of quantum efficiency η and compare it with a detector model. We found excellent agreement between theory and experiment when both the material parameters and the pixel geometry are taken into account. For C-QWIPs with the bound-to-quasi-bound structure, a η of 37% is observed, albeit at a large voltage of-11V. Since this voltage is outside the operating regime of the existing readout electronics, we investigated several more compatible structures and achieved η in the range of 15 — 26%. This range of η, although lower than the original value, is still approximately three times higher than that of the grating coupled QWIPs, and the coupling bandwidth is also three times wider. The C-QWIP approach thus holds significant performance advantages over the grating approach. Combined with its economical processing steps and flexible wavelength coverage, the C-QWIP technology has proven its advantages in infrared detection.
机译：ARL和L3-CE已开发出用于长波长应用的波纹量子阱红外光电探测器（C-QWIP）技术。已经演示了几种大型1024×1024 C-QWIP焦平面阵列（FPA）。在本文中，我们根据量子效率η对FPA性能进行了详细分析，并将其与检测器模型进行了比较。当同时考虑材料参数和像素几何形状时，我们在理论和实验之间找到了极好的一致性。对于具有键合至准键合结构的C​​-QWIP，即使在-11V的大电压下，也观察到η为37％。由于此电压超出了现有读出电子设备的工作范围，因此我们研究了几种更兼容的结构，并获得了15％至26％的η值。 η的这个范围虽然低于原始值，但仍然比光栅耦合QWIP的范围大约高三倍，耦合带宽也宽了三倍。因此，与光栅方法相比，C-QWIP方法具有明显的性能优势。结合其经济的处理步骤和灵活的波长覆盖范围，C-QWIP技术已证明其在红外检测中的优势。

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