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

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{sub o,OM}| = 1.8 MHz (|g{sub o,OM}|/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 g{sub o,OM} values. This would lead to longer lifetimes at cryogenic temperatures, due to the suppression of acoustic leakage.
Authors:
 [1] ;  [2] ; ;  [1] ;  [3] ;  [4] ; ; ;  [3] ;  [5] ;  [6] ;  [5] ;  [2] ; ;  [7] ;  [1] ;  [8]
  1. Catalan Institute of Nanoscience and Nanotechnology, Campus UAB, Edifici ICN2, 08193 Bellaterra (Spain)
  2. (Italy)
  3. IEMN, Universite de Lille 1, Villeneuve d’Ascq (France)
  4. (Morocco)
  5. NEST, Istituto Nanoscienze – CNR and Scuola Normale Superiore, Piazza San Silvestro 12, Pisa, I-56127 (Italy)
  6. Depto. Física, Universidad de la Laguna, 38206 (Spain)
  7. Nanophotonics Technology Center, Universitat Politècnica de València, Valencia (Spain)
  8. (ICREA), 08010 Barcelona (Spain)
Publication Date:
OSTI Identifier:
22420186
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Advances; Journal Volume: 4; Journal Issue: 12; Other Information: (c) 2014 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COUPLING; FLEXIBILITY; GHZ RANGE; LEAKS; MHZ RANGE; PARTICLES; RESPIRATION; TEMPERATURE RANGE 0273-0400 K