Torsional frequency mixing and sensing in optomechanical resonators

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • J. G. Huang
  • H. Cai
  • Y. D. Gu
  • J. H. Wu
  • T. N. Chen
  • Z. C. Yang
  • Y. L. Hao
  • A. Q. Liu

Detail(s)

Original languageEnglish
Article number111102
Journal / PublicationApplied Physics Letters
Volume111
Issue number11
Publication statusPublished - 11 Sep 2017
Externally publishedYes

Abstract

In this letter, a torsional optomechanical resonator for torque sensing and torsional mechanical frequency mixing is experimentally demonstrated. The torsional mechanical resonator is embedded into a split optical racetrack resonator, which provides high sensitivity in measuring torsional mechanical motion. Using this high sensitivity, torsional mechanical frequency mixing is observed without regenerative mechanical motion. The displacement noise floor of the torsional mechanical resonator is 50 fm/Hz0.5, which demonstrates a resonant torque sensitivity of 3.58 × 10-21N m/Hz0.5. This demonstration will benefit potential applications for on-chip RF signal modulation using optical mechanical resonators.

Bibliographic Note

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Citation Format(s)

Torsional frequency mixing and sensing in optomechanical resonators. / Huang, J. G.; Cai, H.; Gu, Y. D.; Chin, L. K.; Wu, J. H.; Chen, T. N.; Yang, Z. C.; Hao, Y. L.; Liu, A. Q.

In: Applied Physics Letters, Vol. 111, No. 11, 111102, 11.09.2017.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review