Acoustic confinement in superlattice cavities
Abstract
The large coupling rate between the acoustic and optical fields confined in GaAs/AlAs superlattice cavities makes them appealing systems for cavity optomechanics. We have developed a mathematical model based on the scattering matrix that allows the acoustic guided modes to be predicted in nano and micropillar superlattice cavities. We demonstrate here that the reflection at the surface boundary considerably modifies the acoustic quality factor and leads to significant confinement at the micropillar center. Our mathematical model also predicts unprecedented acoustic Fano resonances on nanopillars featuring small mode volumes and very high mechanical quality factors, making them attractive systems for optomechanical applications.
Cite
@article{arxiv.1606.02211,
title = {Acoustic confinement in superlattice cavities},
author = {Daniel Garcia-Sanchez and Samuel Déleglise and Jean-Louis Thomas and Paola Atkinson and Camille Lagoin and Bernard Perrin},
journal= {arXiv preprint arXiv:1606.02211},
year = {2016}
}
Comments
7 pages, 4 figures