Free-space high-Q nanophotonics

Jianbo Yu; Wenzhe Yao; Min Qiu; Qiang Li

doi:10.1038/s41377-025-01825-x

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Free-space high-Q nanophotonics

Reviews

- Free-space high-Q nanophotonics
- Light: Science & Applications Vol. 14, Issue 6, Pages: 1504-1521(2025)
- Affiliations：
  
  1.State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China
  2.Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province, School of Engineering, Westlake University, Hangzhou 310024, China
- Author bio：
  
  Qiang Li (qiangli@zju.edu.cn)
- Funds：
- DOI：10.1038/s41377-025-01825-x
  CLC：
- Received：31 May 2024，
  
  Revised：26 February 2025，
  
  Accepted：13 March 2025，
  
  Published Online：27 April 2025，
  
  Published：30 June 2025
- Accepted：
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Yu, J. B. et al. Free-space high-Q nanophotonics. Light: Science & Applications, 14, 1504-1521 (2025).
DOI：

Yu, J. B. et al. Free-space high-Q nanophotonics. Light: Science & Applications, 14, 1504-1521 (2025). DOI： 10.1038/s41377-025-01825-x.

摘要

Abstract

High-Q nanophotonic devices hold great importance in both fundamental research and engineering applications. Their ability to provide high spectral resolution and enhanced light-matter interactions makes them promising in various fields such as sensing

filters

lasing

nonlinear optics

photodetection

coherent thermal emission

and laser stealth. While Q-factors as large as 10

have been achieved experimentally in on-chip microresonators

these modes are excited through near-field coupling of optical fibers. Exciting high-Q modes via free-space light presents a significant challenge primarily due to the larger fabrication area and more lossy channels associated with free-space nanophotonic devices. This Review provides a comprehensive overview of the methods employed to achieve high-Q modes

highlights recent research progress and applications

and discusses the existing challenges as well as the prospects in the field of free-space high-Q nanophotonics.

关键词

Keywords

references

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