分光计
光学
傅里叶变换光谱学
光电探测器
小型化
傅里叶变换
带宽(计算)
光电子学
光谱分辨率
数码产品
红外线的
傅里叶变换红外光谱
材料科学
光电二极管
物理
计算机科学
电信
纳米技术
电气工程
量子力学
谱线
天文
工程类
作者
Matthias J. Grotevent,Sergii Yakunin,Dominik Bachmann,Carolina Romero,Javier R. Vázquez de Aldana,Mohammad Madi,Michel Calame,Maksym V. Kovalenko,Ivan Shorubalko
标识
DOI:10.1038/s41566-022-01088-7
摘要
Extreme miniaturization of infrared spectrometers is critical for their integration into next-generation consumer electronics, wearables and ultrasmall satellites. In the infrared, there is a necessary compromise between high spectral bandwidth and high spectral resolution when miniaturizing dispersive elements, narrow band-pass filters and reconstructive spectrometers. Fourier-transform spectrometers are known for their large bandwidth and high spectral resolution in the infrared; however, they have not been fully miniaturized. Waveguide-based Fourier-transform spectrometers offer a low device footprint, but rely on an external imaging sensor such as bulky and expensive InGaAs cameras. Here we demonstrate a proof-of-concept miniaturized Fourier-transform waveguide spectrometer that incorporates a subwavelength and complementary-metal-oxide-semiconductor-compatible colloidal quantum dot photodetector as a light sensor. The resulting spectrometer exhibits a large spectral bandwidth and moderate spectral resolution of 50 cm-1 at a total active spectrometer volume below 100 μm × 100 μm × 100 μm. This ultracompact spectrometer design allows the integration of optical/analytical measurement instruments into consumer electronics and space devices.
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