Multi-spectral and Hyperspectral Earth Remote Sensing Instruments based on T2SL Infrared Focal Plane Arrays

In this presentation, we will report our recent efforts in achieving high performance in Antimonides type-II superlattice (T2SL) based infrared photodetectors using the barrier infrared detector (BIRD) architecture. The high operating temperature (HOT) BIRD focal plane arrays (FPAs) offer the same high performance, uniformity, operability, manufacturability, and affordability advantages as InSb. However, mid-wavelength infrared (MWIR) HOT-BIRD FPAs can operate at significantly higher temperatures (>150K) than InSb FPAs (typically 80K). Moreover, while InSb has a fixed cutoff wavelength (~5.4 µm), the HOT-BIRD offers a continuous adjustable cutoff wavelength, ranging from ~4 µm to >15 µm, and is therefore also suitable for long wavelength infrared (LWIR) as well. The LWIR detectors based on the BIRD architecture has also demonstrated significant operating temperature advantages over those based on traditional p-n junction designs. HyTI (Hyperspectral Thermal Imager) and c-FIRST (compact Fire Infrared Radiance Spectral Tracker) based on JPL’s T2SL BIRD FPAs. Based on III-V compound semiconductors, the BIRD FPAs offer a breakthrough solution for the realization of low cost (high yield), high-performance FPAs with excellent uniformity and pixel-to-pixel operability.

本报告将介绍我们在基于锑化物II型超晶格（T2SL）的红外光电探测器中，采用势垒型红外探测器（BIRD）架构以实现高性能表现的最新研究进展。高温工作（HOT）BIRD焦平面阵列（FPAs）具备与锑化铟（InSb）焦平面阵列一致的高性能、高均匀性、优良可操作性、可制造性与成本效益优势。然而，中波红外（MWIR）HOT-BIRD焦平面阵列的工作温度（＞150K）远高于锑化铟焦平面阵列（通常仅为80K）。此外，尽管锑化铟的截止波长固定（约5.4 μm），但该HOT-BIRD架构可实现连续可调的截止波长，覆盖范围约为4 μm至15 μm以上，因此同样适用于长波红外（LWIR）应用场景。基于BIRD架构的长波红外探测器，相较于传统pn结设计的同类器件，同样展现出显著的工作温度优势。基于JPL研发的T2SL BIRD焦平面阵列，已开发出高光谱热成像仪（HyTI）与紧凑型火灾红外辐射光谱追踪器（c-FIRST）。作为III-V族化合物半导体基器件，BIRD焦平面阵列为实现低成本（高良率）、高性能且兼具优异均匀性与像素间可操作性的焦平面阵列提供了突破性解决方案。

搜集汇总

背景与挑战

背景概述

该数据集介绍基于T2SL BIRD架构的红外焦平面阵列，用于多光谱和高光谱地球遥感仪器，具有高工作温度、可调截止波长和低成本高性能特点，支持中长波红外应用，如HyTI和c-FIRST仪器。