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 laser-cooling experiments. More recently, such an opto-mechanical interaction has been observed in integrated nano-waveguides and microcavities in the Brillouin regime, where short-wavelength mechanical modes scatters light at several GHz. Here we engineer coupled optical microcavities spectra to enable a low threshold excitation of mechanical travelling-wave modes through backward stimulated Brillouin scattering. Exploring the backward scattering we propose microcavity designs supporting super high frequency modes ($\sim 25$ GHz) an large optomechanical coupling rates ($g_0/2\pi \sim 50$ kHz).

arXiv commentmain text: 7 pages, 4 figures, accompanies supplmentary information

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Cited by in corpus (8)

• A silicon Brillouin laser
• Brillouin lasing in coupled silica toroid microcavities
• Active optomechanics through relaxation oscillations
• Piezo-optomechanical coupling of a 3D microwave resonator to a bulk acoustic wave crystalline resonator
• Designing of strongly confined short-wave Brillouin phonons in silicon waveguide periodic lattices
• Fully reconfigurable optomechanical add-drop filters
• Octave Spanning Visible to SWIR Integrated Coil-Stabilized Brillouin Lasers
• Giant Brillouin gain in frozen CS2 capillaries