Enhanced photon-phonon coupling via dimerization in one-dimensional optomechanical crystals
Abstract
We show that dimerization of an optomechanical crystal lattice, which leads to folding of the band diagram, can couple flexural mechanical modes to optical fields within the unit cell via radiation pressure. When compared to currently realized crystals, a substantial improvement in the coupling between photons and phonons is found. For experimental verification, we implement a dimerized lattice in a silicon optomechanical nanobeam cavity and measure a vacuum coupling rate of g0/2π= 1.7 MHz between an optical resonance at λc = 1545 nm and a mechanical resonance at 1.14 GHz.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jun 18, 2018
- Source ID
- 10.1063/1.5030659
Entities
People
- Matthew Matheny
Organizations
- California Institute of Technology
- Office of Naval Research