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Rotational Doppler detection with Gaussian light mode emitter

  • Yanxiang Zhang*
  • , Yongkang Dong*
  • *Corresponding author for this work
  • Harbin Institute of Technology
  • School of Astronautics, Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Rotational Doppler effect has been recognized as a strongly robust technique for rotational body detection. Current consensus shows that rotational Doppler detection requires orbital angular momentum (OAM) manipulation and emission. Here, we challenge such popular belief by Gaussian mode emitter without expensive OAM modulator. Through probing beating frequency between two OAM eigenmodes within scattered multiple modes, we can measure rotational frequency of non-cooperative targets, and thus can be employed to specific target identification. Experiments demonstrate the good agreement with theoretical analysis. Our methodology and findings may be used to astronomical observation, meteorological monitoring, unknown celestial body detection and industrial applications.

Original languageEnglish
Title of host publicationFourteenth National Conference on Photonics
EditorsYongkang Dong, Hongwei Li
PublisherSPIE
ISBN (Electronic)9781510699182
DOIs
StatePublished - 2 Dec 2025
Event14th National Conference on Photonics - Harbin, China
Duration: 15 Aug 202517 Aug 2025

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume13986
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference14th National Conference on Photonics
Country/TerritoryChina
CityHarbin
Period15/08/2517/08/25

Keywords

  • non-cooperative target
  • optical vortices
  • photonics orbital angular momentum
  • rotating Doppler effect
  • velocimetry

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