Related papers: An optically defined phononic crystal defect

An optically defined phononic crystal defect

URL: http://arxiv.org/abs/2403.08510v2
Date: Fri, 28 Jun 2024 18:17:32 GMT
Title: An optically defined phononic crystal defect
Authors: Thomas J. Clark, Simon Bernard, Jiaxing Ma, Vincent Dumont, Jack C. Sankey,
Abstract summary: We apply an optical spring to a phononic crystal membrane to transfer a single mechanical mode into the bandgap. This localization is evidenced by an enhanced mechanical frequency shift commensurate with a 37-fold reduction in the mode's participating mass. Our results lay groundwork for a new class of optomechanical systems that control mechanical mode profile and participating mass.
Score: 0.0
License: http://creativecommons.org/licenses/by/4.0/
Abstract: We demonstrate a mechanical crystal with an optically programmable defect mode. By applying an optical spring to a single unit cell of a phononic crystal membrane, we smoothly transfer a single mechanical mode into the bandgap, thereby localizing its spatial profile from one spanning the entire crystal to one confined within a few unit cells. This localization is evidenced by an enhanced mechanical frequency shift commensurate with a 37-fold reduction in the mode's participating mass. Our results lay groundwork for a new class of optomechanical systems that control mechanical mode profile and participating mass.

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