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.

7 pages, 4 figures

References in corpus (12)

• Sideband Cooling Micromechanical Motion to the Quantum Ground State
• Optomechanically induced transparency
• Electromagnetically Induced Transparency and Slow Light with Optomechanics
• Radiation-pressure cooling and optomechanical instability of a micro-mirror
• Self-cooling of a micro-mirror by radiation pressure
• Single-photon Optomechanics
• State Transfer Between a Mechanical Oscillator and Microwave Fields in the Quantum Regime
• Resolved sidebands in a strain-coupled hybrid spin-oscillator system
• Optimized optomechanical crystal cavity with acoustic radiation shield
• Single-photon nonlinearities in two-mode optomechanics
• Enhanced nonlinear interactions in quantum optomechanics via mechanical amplification
• Resolved Sideband Emission of InAs/GaAs Quantum Dots Strained by Surface Acoustic Waves

Cited by in corpus (5)

• Inducing micromechanical motion by optical excitation of a single quantum dot
• Optomechanical properties of GaAs/AlAs micropillar resonators operating in the 18 GHz range
• Fiber-integrated microcavities for efficient generation of coherent acoustic phonons
• Phase-dependent double optomechanically induced transparency in a hybrid optomechanical cavity system with coherently mechanical driving
• High spectral resolution of GaAs/AlAs phononic cavities by subharmonic resonant pump-probe excitation