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arXiv · 1101.4499

Wavelength-sized GaAs optomechanical resonators with GHz frequency

Lu Ding·Christophe Baker·Pascale Senellart·Aristide Lemaitre·Sara Ducci·Giuseppe Leo·Ivan Favero
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Abstract

We report on wavelength-sized GaAs optomechanical disk resonators showing ultra-strong optomechanical interaction. We observe optical transduction of a disk mechanical breathing mode with 1.4 GHz frequency and effective mass of ~ 2 pg. The measured vacuum optomechanical coupling rate reaches 0.8 MHz, with a related differential optomechanical coupling factor of 485 GHz/nm. The disk Brownian motion is optically resolved with a sensitivity of 10-17 m/{\sqrt}Hz at room temperature and pressure.

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Lu Ding, Christophe Baker, Pascale Senellart, Aristide Lemaitre, Sara Ducci, Giuseppe Leo, Ivan Favero. 2011-01-24. Wavelength-sized GaAs optomechanical resonators with GHz frequency. https://doi.org/10.1063/1.3563711

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