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Quasi-two-dimensional optomechanical crystals with a complete phononic bandgap

Authors
  • Alegre, Thiago P. Mayer
  • Safavi-Naeini, Amir
  • Winger, Martin
  • Painter, Oskar
Type
Published Article
Publication Date
Dec 12, 2010
Submission Date
Dec 12, 2010
Identifiers
DOI: 10.1364/OE.19.005658
Source
arXiv
License
Yellow
External links

Abstract

A fully planar two-dimensional optomechanical crystal formed in a silicon microchip is used to create a structure devoid of phonons in the GHz frequency range. A nanoscale photonic crystal cavity is placed inside the phononic bandgap crystal in order to probe the properties of the localized acoustic modes. By studying the trends in mechanical damping, mode density, and optomechanical coupling strength of the acoustic resonances over an array of structures with varying geometric properties, clear evidence of a complete phononic bandgap is shown.

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