Dynamical back-action at 5.5 GHz in a corrugated optomechanical beam

作者：Navarro Urrios D^*; Gomis Bresco J; El Jallal S; Oudich M; Pitanti A; Capuj N; Tredicucci A; Alzina F; Griol A; Pennec Y; Djafari Rouhani B; Martinez A; Sotomayor Torres C M

来源：AIP Advances, 2014, 4(12): 124601.

DOI：10.1063/1.4902171

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 vertical bar g(o, OM)vertical bar= 1.8 MHz (vertical bar g(o, OM)vertical bar/2 pi=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.

• 出版日期2014-12