量子电子学报 ›› 2025, Vol. 42 ›› Issue (5): 694-702.doi: 10.3969/j.issn.1007-5461.2025.05.011

• 量子光学 • 上一篇    下一篇

基于轨道角动量光强调制实现转速及转向的同时探测 (封面文章)

黄思远 , 洪 玲 *, 陈理想 *   

  1. 厦门大学物理学系, 福建 厦门 361005
  • 收稿日期:2024-04-28 修回日期:2024-06-03 出版日期:2025-09-28 发布日期:2025-09-28
  • 通讯作者: E-mail: hongling@stu.xmu.edu.cn; chenlx@xmu.edu.cn E-mail: E-mail: hongling@stu.xmu.edu.cn; chenlx@xmu.edu.cn
  • 作者简介:黄思远 ( 1998 - ), 江西樟树人, 研究生, 主要从事光子轨道角动量及旋转多普勒效应相关方面的研究。 E-mail: 19820211153703@stu.xmu.edu.cn
  • 基金资助:
    国家自然科学基金 (12034016), 福建省自然科学基金 (2021J02002)

Simultaneous detection of rotational speed and direction based on orbital angular momentum light intensity modulation (Cover Paper)

HUANG Siyuan, HONG Ling *, CHEN Lixiang   

  1. Department of Physics, Xiamen University, Xiamen 361005, China
  • Received:2024-04-28 Revised:2024-06-03 Published:2025-09-28 Online:2025-09-28

摘要: 结构光引起的旋转多普勒效应是旋转测速的基本机理, 但常用的基于频差的时间拍频信号测量仅能测得转 速大小, 无法获取转动方向的信息。为此, 本文基于矢量涡旋光场调控, 提出了一种对转动方向敏感的微粒旋转测速 方案。该方案通过振幅调制标记来识别基于自旋多普勒频移调制的信号与未调制信号, 最终在已知调制频差信息的 辅助下, 实现了旋转速度和转动方向的并行测量。这种新颖的调制探测手段简洁明了、便捷高效, 在微粒操控与探测 等应用领域具有潜在的应用价值。

关键词: 量子光学, 光场调控, 旋转多普勒效应, 旋转相位, 并行测量

Abstract: The rotational Doppler effect caused by structured light is the basic mechanism of rotational velocity measurement. However, the general time-beat signal measurement method based on frequency difference can only measure the rotation speed, but can not obtain the information of rotation direction. Therefore, this paper presents a direction-sensitive rotational speed measurement scheme for microparticles, based on the modulation of vector vortex light fields. This scheme marks the signals by amplitude modulation, distinguishes the signals modulated based on rotational Doppler frequency shift due to spin angular momentum from the unmodulated signals, and ultimately realizes the simultaneous measurement of rotation speed and rotation direction with the help of known modulation frequency difference information. This novel modulation detection method is concise, convenient and efficient, and has potential applications in particle manipulation and detection.

Key words: quantum optics, light field manipulation, rotational Doppler effect, rotation phase, parallel measurement

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