Torsional frequency mixing and sensing in optomechanical resonators

Torsional frequency mixing and sensing in optomechanical resonators
Title:
Torsional frequency mixing and sensing in optomechanical resonators
Other Titles:
Applied Physics Letters
Keywords:
Publication Date:
12 September 2017
Citation:
Appl. Phys. Lett. 111, 111102 (2017); doi: 10.1063/1.4986811
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 21Nm/Hz0.5. This demonstration will benefit potential applications for on-chip RF signal modulation using optical mechanical resonators.
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PublisherCopyrights
Funding Info:
Description:
ISSN:
1077-3118
0003-6951
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