Universitat Autònoma de Barcelona
We report on the optomechanical properties of a breathing mechanical mode oscillating at 5.5 GHz in a 1D corrugated Si nanobeam. This mode has an experimental single-particle optomechanical coupling rate of |g|=1.8 MHz (|g|/2π=0.3 MHz) and shows strong dynamical back-action effects at room temperature. The geometrical flexibility of the unit-cell would lend itself to further engineering of the cavity region to localize the mode within the full phononic band-gap present at 4 GHz while keeping high go, OM values. This would lead to longer lifetimes at cryogenic temperatures, due to the suppression of acoustic leakage.
Inglés
Action effect; Cavity regions; Coupling rate; Cryogenic temperatures; Geometrical flexibility; Optomechanical; Room temperature; Single-particle
European Commission 321122
European Commission 233883
Ministerio de Economía y Competitividad MAT2012-31392
AIP advances ; Vol. 4, no. 12 (2014), art. 124601
open access
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