Integrated microcavity optomechanics with a suspended photonic crystal mirror above a distributed Bragg reflector

Abstract

Increasing the interaction between light and mechanical resonators is an ongoing endeavor in the field of cavity optomechanics. Optical microcavities allow for boosting the interaction strength through their strong spatial confinement of the optical field. In this work, we follow this approach by realizing a sub-wavelength-long, free-space optomechanical microcavity on-chip fabricated from an (Al,Ga)As heterostructure. A suspended GaAs photonic crystal mirror is acting as a highly reflective mechanical resonator, which together with a distributed Bragg reflector forms an optomechanical microcavity. We demonstrate precise control over the microcavity resonance by change of the photonic crystal parameters. The interplay between the microcavity mode and a guided resonance of the photonic crystal modifies the cavity response and results in a stronger dynamical backaction on the mechanical resonator compared to conventional optomechanical dynamics.

arXiv comment11 pages, 6 figures + Supplementary Material with 10 pages, 12 figures, 2 tables

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Cited by in corpus (8)

• Quantum amplification and simulation of strong and ultrastrong coupling of light and matter
• Incubating Advances in Integrated Photonics with Emerging Sensing and Computational Capabilities
• Nanomechanical crystalline AlN resonators with high quality factors for quantum optoelectromechanics
• Narrow-linewidth Fano microcavities with resonant subwavelength grating mirror
• Coherent feedback control for cavity optomechanical systems with a frequency-dependent mirror
• Dissipative and dispersive cavity optomechanics with a frequency-dependent mirror
• Highly reflective and high-$Q$ thin resonant subwavelength gratings
• Optical microcavity with a pair of suspended resonant mirrors