Affiliation:
1. Chinese Academy of Sciences
2. Frontier Science Center for Quantum Information
3. Beijing Academy of Quantum Information Sciences
Abstract
Faint light spectroscopy has many important applications such as fluorescence spectroscopy, lidar, and astronomical observations. However, the long measurement time limits its application to real-time measurement. In this work, a photon counting reconstructive spectrometer combining metasurfaces and superconducting nanowire single-photon detectors is proposed. A prototype device was fabricated on a silicon-on-insulator substrate, and its performance was characterized. Experiment results show that this device supports spectral reconstruction of mono-color lights with a resolution of 2 nm in the wavelength region of 1500–1600 nm. Its detection efficiency is 1.4%–3.2% in this wavelength region. The measurement time required by the photon counting reconstructive spectrometer was also investigated experimentally, showing its potential to be applied in scenarios requiring real-time measurement.
Funder
National Key Research and Development Program of China
Beijing Municipal Natural Science Foundation
National Natural Science Foundation of China
Tsinghua Initiative Scientific Research Program
Subject
Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials
Cited by
5 articles.
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