Electrically tunable planar liquid-crystal singlets for simultaneous spectrometry and imaging

Zhou Zhou; Yiheng Zhang; Yingxin Xie; Tian Huang; Zile Li; Peng Chen; Yan-qing Lu; Shaohua Yu; Shuang Zhang; Guoxing Zheng

doi:10.1038/s41377-024-01608-w

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Electrically tunable planar liquid-crystal singlets for simultaneous spectrometry and imaging

Original Articles

- Electrically tunable planar liquid-crystal singlets for simultaneous spectrometry and imaging
- Light: Science & Applications Vol. 13, Issue 11, Pages: 2589-2598(2024)
- Affiliations：
  
  1.Electronic Information School, and School of Microelectronics, Wuhan University, Wuhan 430072, China
  2.NUS Graduate School, National University of Singapore, Singapore 119077, Singapore
  3.Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117583, Singapore
  4.National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulation, and College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China
  5.Peng Cheng Laboratory, Shenzhen 518055, China
  6.New Cornerstone Science Laboratory, Department of Physics, University of Hong Kong, Hong Kong, China
  7.Department of Electrical and Electronic Engineering, University of Hong Kong, Hong Kong, China
  8.Wuhan Institute of Quantum Technology, Wuhan 430206, China
- Author bio：
  
  Zile Li (lizile@whu.edu.cn)
  Peng Chen (chenpeng@nju.edu.cn)
  Guoxing Zheng (gxzheng@whu.edu.cn)
- Funds：
- DOI：10.1038/s41377-024-01608-w
  CLC：
- Published：30 November 2024，
  
  Published Online：09 September 2024，
  
  Received：18 March 2024，
  
  Revised：12 August 2024，
  
  Accepted：26 August 2024
- Accepted：
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Zhou, Z. et al. Electrically tunable planar liquid-crystal singlets for simultaneous spectrometry and imaging. Light: Science & Applications, 13, 2589-2598 (2024).
DOI：

Zhou, Z. et al. Electrically tunable planar liquid-crystal singlets for simultaneous spectrometry and imaging. Light: Science & Applications, 13, 2589-2598 (2024). DOI： 10.1038/s41377-024-01608-w.

摘要

Abstract

Conventional hyperspectral cameras cascade lenses and spectrometers to acquire the spectral datacube

which forms the fundamental framework for hyperspectral imaging. However

this cascading framework involves tradeoffs among spectral and imaging performances when the system is driven toward miniaturization. Here

we propose a spectral singlet lens that unifies optical imaging and computational spectrometry functions

enabling the creation of minimalist

miniaturized and high-performance hyperspectral cameras. As a paradigm

we capitalize on planar liquid crystal optics to implement the proposed framework

with each liquid-crystal unit cell acting as both phase modulator and electrically tunable spectral filter. Experiments with various targets show that the resulting millimeter-scale hyperspectral camera exhibits both high spectral fidelity (> 95%) and high spatial resolutions (~1.7 times the diffraction limit). The proposed "two-in-one" framework can resolve the conflicts between spectral and imaging resolutions

which paves a practical pathway for advancing hyperspectral imaging systems toward miniaturization and portable applications.

关键词

Keywords

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