Cavity piezooptomechanics: Piezoelectrically excited, optically transduced optomechanical resonators

Chi Xiong, Linran Fan, Xiankai Sun, Hong X. Tang

Research output: Contribution to journalArticlepeer-review

36 Scopus citations


We present a monolithic integrated aluminum nitride (AlN) optomechanical resonator in which the mechanical motion is actuated by piezoelectric force and the displacement is transduced by a high-Q optical cavity. The AlN optomechanical resonator is excited from a radio-frequency electrode via a small air gap to eliminate resonator-to-electrode loss. We observe the electrically excited mechanical motion at 47.3 MHz, 1.04 GHz, and 3.12 GHz, corresponding to the 1st, 2nd, and 4th radial-contour mode of the wheel resonator, respectively. An equivalent circuit model is developed to describe the observed Fano-like resonance spectrum.

Original languageEnglish (US)
Article number021110
JournalApplied Physics Letters
Issue number2
StatePublished - Jan 14 2013
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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