Quasibound states in the continuum in photonic-crystal-based optomechanical microcavities

Abstract

We present a detailed study of mechanically compliant, photonic-crystal-based microcavities featuring a quasi-bound state in the continuum. Such systems have recently been predicted to reduce the optical loss in Fabry-Perot-type optomechanical cavities. However, they require two identical photonic-crystal slabs facing each other, which poses a considerable challenge for experimental implementation. We investigate how such an ideal system can be simplified and still exhibit a quasi-bound state in the continuum. We find that a suspended photonic-crystal slab facing a distributed Bragg reflector realizes an optomechanical system with a quasi-bound state in the continuum. In this system, the radiative cavity loss can be eliminated to the extent that the cavity loss is dominated by dissipative loss originating from material absorption only. These proposed optomechanical cavity designs are predicted to feature optical quality factors in excess of 10^5.

11 pages, 14 figures

References in corpus (15)

• Circuit cavity electromechanics in the strong coupling regime
• Ground-state cooling of a micromechanical oscillator: generalized framework for cold damping and cavity-assisted cooling schemes
• Single-photon Optomechanics
• High Quality factor photonic crystal nanobeam cavities
• Electromagnetically Induced Transparency and Absorption in Metamaterials: The Radiating Two-Oscillator Model and Its Experimental Confirmation
• Wavelength- and material-dependent absorption in GaAs and AlGaAs microcavities
• Effective material parameter retrieval for thin sheets: theory and application to graphene, thin silver films, and single-layer metamaterials
• Kerr enhanced backaction cooling in magnetomechanics
• Optomechanical crystal with bound states in the continuum
• Cavity Quantum Electrodynamics with Frequency-Dependent Reflectors
• Deep neural networks for the prediction of the optical properties and the free-form inverse design of metamaterials
• Mechanical bound states in the continuum for macroscopic optomechanics
• 2D photonic-crystal optomechanical nanoresonator
• High-Q trampoline resonators from strained crystalline InGaP for integrated free-space optomechanics
• Phononically shielded photonic-crystal mirror membranes for cavity quantum optomechanics

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• Optical microcavity with a pair of suspended resonant mirrors