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Published April 18, 2014 | Published + Submitted
Journal Article Open

Two-Dimensional Phononic-Photonic Band Gap Optomechanical Crystal Cavity


We present the fabrication and characterization of an artificial crystal structure formed from a thin film of silicon that has a full phononic band gap for microwave X-band phonons and a two-dimensional pseudo-band gap for near-infrared photons. An engineered defect in the crystal structure is used to localize optical and mechanical resonances in the band gap of the planar crystal. Two-tone optical spectroscopy is used to characterize the cavity system, showing a large coupling (g_0/2π≈220  kHz) between the fundamental optical cavity resonance at ω_o/2π=195  THz and colocalized mechanical resonances at frequency ω_m/2π≈9.3  GHz.

Additional Information

© 2014 American Physical Society. Received 7 January 2014; published 14 April 2014. The authors would like to thank T. P. M. Alegre for contributions. This work was supported by the DARPA ORCHID and MESO programs, the Institute for Quantum Information and Matter, a NSF Physics Frontiers Center with support of the Gordon and Betty Moore Foundation, and the Kavli Nanoscience Institute at Caltech. A. H. S.-N. and J. C. gratefully acknowledge support from NSERC. S. G. was supported by a Marie Curie International Outgoing Fellowship within the 7th European Community Framework Programme.

Attached Files

Published - PhysRevLett.112.153603.pdf

Submitted - 1401.1493v1.pdf


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