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Brillouin Optomechanics in Coupled Silicon Microcavities.

ABSTRACT: The simultaneous control of optical and mechanical waves has enabled a range of fundamental and technological breakthroughs, from the demonstration of ultra-stable frequency reference devices, to the exploration of the quantum-classical boundaries in optomechanical laser-cooling experiments. More recently, such an optomechanical interaction has been observed in integrated nano-waveguides and microcavities in the Brillouin regime, where short-wavelength mechanical modes scatter light at several GHz. Here we engineer coupled optical microcavities to enable a low threshold excitation of mechanical travelling-wave modes through backward stimulated Brillouin scattering. Exploring the backward scattering we propose silicon microcavity designs based on laterally coupled single and double-layer cavities, the proposed structures enable optomechanical coupling with very high frequency modes (11 to 25?GHz) and large optomechanical coupling rates (g₀/2?) from 50?kHz to 90?kHz.

SUBMITTER: Espinel YA

PROVIDER: S-EPMC5338249 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature

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Brillouin Optomechanics in Coupled Silicon Microcavities.

Espinel Y A V YA Santos F G S FG Luiz G O GO Alegre T P Mayer TP Wiederhecker G S GS

Scientific reports 20170306

The simultaneous control of optical and mechanical waves has enabled a range of fundamental and technological breakthroughs, from the demonstration of ultra-stable frequency reference devices, to the exploration of the quantum-classical boundaries in optomechanical laser-cooling experiments. More recently, such an optomechanical interaction has been observed in integrated nano-waveguides and microcavities in the Brillouin regime, where short-wavelength mechanical modes scatter light at several G ...[more]

PMID: 28262814

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