Single-Detector Spectrometer Using a Superconducting Nanowire.
Lingdong KongQing-Yuan ZhaoHui WangJiawei GuoHaiyangbo LuHao HaoShuya GuoXuecou TuLabao ZhangXiaoqing JiaLin KangXinglong WuJian ChenPeiheng WuPublished in: Nano letters (2021)
Designing a spectrometer without the need for wavelength multiplexing optics can effectively reduce the complexity and physical footprint. On the basis of the computational spectroscopic strategy and combining a broadband-responsive dynamic detector, we successfully demonstrate an optics-free single-detector spectrometer that maps the tunable quantum efficiency of a superconducting nanowire into a matrix to build a solvable mathematical equation. Such a spectrometer can realize a broadband spectral responsivity ranging from 660 to 1900 nm. The spectral resolution at the telecom is sub-10 nm, exceeding the energy resolving capacity of existing infrared single-photon detectors. Meanwhile, benefiting from the optics-free setup, precise time-of-flight measurements can be simultaneously achieved. We have demonstrated a spectral LiDAR with eight spectral channels. This spectrometer scheme paves the way for applying superconducting nanowire detectors in multifunctional spectroscopy and represents a conceptual advancement for on-chip spectroscopy and spectral imaging.
Keyphrases
- high resolution
- optical coherence tomography
- high speed
- room temperature
- dual energy
- single molecule
- image quality
- mass spectrometry
- photodynamic therapy
- mental health
- computed tomography
- molecular dynamics
- physical activity
- magnetic resonance
- magnetic resonance imaging
- drug delivery
- circulating tumor cells
- fluorescence imaging