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arXiv · 1602.03222

Metamaterial control of stimulated Brillouin scattering

M. J. A. Smith·B. T. Kuhlmey·C. Martijn de Sterke·C. Wolff·M. Lapine·C. G. Poulton
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Abstract

Using full opto-acoustic numerical simulations, we demonstrate enhancement and suppression of the SBS gain in a metamaterial comprising a subwavelength cubic array of dielectric spheres suspended in a dielectric background material. We develop a general theoretical framework and present several numerical examples using technologically important materials. For As$_2$S$_3$ spheres in silicon, we achieve a gain enhancement of more than an order of magnitude compared to pure silicon, and for GaAs spheres in silicon, full suppression is obtained. The gain for As$_2$S$_3$ glass can also be strongly suppressed by embedding silica spheres. The constituent terms of the gain coefficient are shown to depend in a complex way on the filling fraction. We find that electrostriction is the dominant effect behind the control of SBS in bulk media.

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M. J. A. Smith, B. T. Kuhlmey, C. Martijn de Sterke, C. Wolff, M. Lapine, C. G. Poulton. 2016-05-10. Metamaterial control of stimulated Brillouin scattering. https://doi.org/10.1364/ol.41.002338

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