Hyperspectral sensors, combining the functions of photon detection with ultrahigh spectral resolution in a single device, have emerged as a new class of devices with significant potential for applications that rely on the input of optical information. Despite continued advancement, the widespread use of infrared hyperspectral sensors is still limited primarily due to the high cost associated with the growth and processing of epitaxial semiconductors, such as HgCdTe, InSb, and superlattices. Here, it is shown that colloidal quantum dots (CQDs) provide a promising route toward low‐cost, compact, and sensitive infrared hyperspectral sensors with tunable sensing ranges. In total, 64 narrowband channels with full‐width at half‐maxima down to ≈30 cm⁻¹ can be realized by directly integrating CQDs sensors with a distributed Bragg mirror filter array. The results of high‐resolution spectra measurement with resolving power up to 180 and acquisition of a hyperspectral image cube in the short‐wave infrared range, benefitting from the fast (≈120 ns) and sensitive (>10¹⁰ Jones) performance of the CQDs sensors, are experimentally demonstrated.

中文翻译：

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具有胶体量子点的高光谱数据采集

在单个设备中结合了光子检测功能和超高光谱分辨率的高光谱传感器已成为一类新型设备，对于依赖于光学信息输入的应用具有巨大的潜力。尽管取得了持续的进步，但是红外高光谱传感器的广泛使用仍然受到限制，这主要是由于与外延半导体（例如HgCdTe，InSb和超晶格）的生长和加工相关的高成本。此处显示，胶体量子点（CQD）为通往具有可调感应范围的低成本，紧凑且灵敏的红外高光谱传感器提供了一条有希望的途径。总共有64个窄带通道，半峰全宽低至≈30cm ^-1可以通过将CQDs传感器与分布式布拉格镜滤波器阵列直接集成来实现。高分辨率光谱测量的结果，分辨力高达180，并在短波红外范围内获得了高光谱图像立方体，这得益于CQD的快速（≈120ns）和灵敏（> 10 ¹⁰ Jones）性能传感器，进行了实验验证。