2018 Volume 27 Issue 8
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Kai Li, Sankar Davuluri, Yong Li. 2018: Three-mode optomechanical system for angular velocity detection, Chinese Physics B, 27(8): 264-270. doi: 10.1088/1674-1056/27/8/084203
Citation: Kai Li, Sankar Davuluri, Yong Li. 2018: Three-mode optomechanical system for angular velocity detection, Chinese Physics B, 27(8): 264-270. doi: 10.1088/1674-1056/27/8/084203

Three-mode optomechanical system for angular velocity detection

  • Available Online: 01/01/2018
  • Fund Project: the National Key Research and Development Program of China(Grant 2016YFA0301200)%the National Basic Research Program of China(Grant 2014CB921403)%the Science Challenge Project of China(Grant TZ2017003)%the National Natural Science Foundation of China(Grant . 11774024, 11534002, and U1530401)
  • 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.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Three-mode optomechanical system for angular velocity detection

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.

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