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Published August 20, 2012 | Published + Submitted
Journal Article Open

Optimized optomechanical crystal cavity with acoustic radiation shield

Abstract

We present the design of an optomechanical crystal nanobeam cavity that combines finite-element simulation with numerical optimization, and considers the optomechanical coupling arising from both moving dielectric boundaries and the photo-elastic effect. Applying this methodology results in a nanobeam with an experimentally realized intrinsic optical Q-factor of 1.2×10^6, a mechanical frequency of 5.1 GHz, a mechanical Q-factor of 6.8×10^5 (at T = 10 K), and a zero-point-motion optomechanical coupling rate of g = 1.1 MHz.

Additional Information

© 2012 American Institute of Physics. Received 12 June 2012; accepted 9 August 2012; published online 23 August 2012. This work was supported by the DARPA/MTO ORCHID program through a grant from AFOSR, and the Kavli Nanoscience Institute at Caltech. J.C. and A.S.N. gratefully acknowledges support from NSERC.

Attached Files

Published - ApplPhysLett_101_081115.pdf

Submitted - 1206.2099v1.pdf

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