Mechanical bound state in the continuum for optomechanical microresonators

Abstract

Clamping loss limits the quality factor of mechanical mode in the optomechanical resonators supported with the supporting stem. Using the mechanical bound state in the continuum, we have found that the mechanical clamping loss can be avoided. The mechanical quality factor of microsphere could be achieved up to 10^8 for a specific radius of the stem, where the different coupling channels between the resonator and supporting stem are orthogonal to each other. Such mechanism is proved to be universal for different geometries and materials, thus can also be generalized to design the high quality mechanical resonators.

arXiv comment5 pages, 4 figures

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• Probing Quantum Correlation Functions Through Energy Absorption Interferometry
• Engineering bound states in continuum via nonlinearity induced extra dimension
• Observation of bound states in the continuum in a micromechanical resonator
• Photonic integrated circuits in the continuum