Modal spectroscopy of optoexcited vibrations of a micron-scale on-chip resonator at greater than 1 GHz frequency

Tal Carmon*, Kerry J. Vahala

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We analyze experimentally and theoretically >1GHz optoexcited mechanical vibration in an on-chip micron-scaled sphere. Different eigen-mechanical modes are excited upon demand by the centrifugal radiation pressure of the optical whispering-gallery-mode, enabling an optomechanical modal spectroscopy investigation of many vibrational modes. Spectral analysis of the light emitted from the device enables deduction of its natural vibrational modes in analogy with spectroscopy of a molecule’s vibrational levels, and its eccentricity perturbation is shown to induce spectral splitting.

Original languageEnglish
Article number123901
JournalPhysical Review Letters
Volume98
Issue number12
DOIs
StatePublished - 20 Mar 2007
Externally publishedYes

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