中国物理B ›› 2018, Vol. 27 ›› Issue (8): 84203-084203.doi: 10.1088/1674-1056/27/8/084203

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Three-mode optomechanical system for angular velocity detection

Kai Li(李凯), Sankar Davuluri, Yong Li(李勇)   

  1. Beijing Computational Science Research Center, Beijing, China
  • 收稿日期:2018-04-12 修回日期:2018-05-21 出版日期:2018-08-05 发布日期:2018-08-05
  • 通讯作者: Yong Li E-mail:liyong@csrc.ac.cn
  • 基金资助:

    Project supported by the National Key Research and Development Program of China (Grant No. 2016YFA0301200), the National Basic Research Program of China (Grant No. 2014CB921403), the Science Challenge Project of China (Grant No. TZ2017003), and the National Natural Science Foundation of China (Grant Nos. 11774024, 11534002, and U1530401).

Three-mode optomechanical system for angular velocity detection

Kai Li(李凯), Sankar Davuluri, Yong Li(李勇)   

  1. Beijing Computational Science Research Center, Beijing, China
  • Received:2018-04-12 Revised:2018-05-21 Online:2018-08-05 Published:2018-08-05
  • Contact: Yong Li E-mail:liyong@csrc.ac.cn
  • Supported by:

    Project supported by the National Key Research and Development Program of China (Grant No. 2016YFA0301200), the National Basic Research Program of China (Grant No. 2014CB921403), the Science Challenge Project of China (Grant No. TZ2017003), and the National Natural Science Foundation of China (Grant Nos. 11774024, 11534002, and U1530401).

摘要:

We propose a scheme for measuring the angular velocity of absolute rotation using a three-mode optomechanical system in which one mode of the two-dimensional (2D) mechanical resonator is coupled to an optical cavity. When the total system rotates, the Coriolis force acting on the 2D mechanical resonator due to the absolute rotation will affect the mechanical motion and thus change the phase of the output field from the cavity. The angular velocity of the absolute rotation can be estimated by monitoring the spectrum of the output field from the cavity via homodyne measurement. The minimum measurable angular velocity, which is determined by the noise spectrum, is calculated. The working range of the gyroscope for measuring angular velocity is discussed.

关键词: optomechanics, gyroscope

Abstract:

We propose a scheme for measuring the angular velocity of absolute rotation using a three-mode optomechanical system in which one mode of the two-dimensional (2D) mechanical resonator is coupled to an optical cavity. When the total system rotates, the Coriolis force acting on the 2D mechanical resonator due to the absolute rotation will affect the mechanical motion and thus change the phase of the output field from the cavity. The angular velocity of the absolute rotation can be estimated by monitoring the spectrum of the output field from the cavity via homodyne measurement. The minimum measurable angular velocity, which is determined by the noise spectrum, is calculated. The working range of the gyroscope for measuring angular velocity is discussed.

Key words: optomechanics, gyroscope

中图分类号:  (Quantum fluctuations, quantum noise, and quantum jumps)

  • 42.50.Lc
06.30.Gv (Velocity, acceleration, and rotation) 42.50.-p (Quantum optics)