Título: Simultaneous guidance of slow photons and slow acoustic phonons in silicon phoxonic crystal slabs

Autor: Laude, Vincent; Beugnot, J.C.; Benchabane, S.; Pennec, Y.; Djafari-Rouhani, B.; Papanikolaou, Nikos; Escalante Fernández, José María; Martínez Abietar, Alejandro José

Resumen: [EN] We demonstrate theoretically that photons and acoustic phonons can be simultaneously guided and slowed down in specially designed nanostructures. Phoxonic crystal waveguides presenting simultaneous phononic and photonic band gaps were designed in perforated silicon membranes that can be conveniently obtained using silicon-on-insulator technology. Geometrical parameters for simultaneous photonic and phononic band gaps were first chosen for optical wavelengths around 1550 nm, based on the finite element analysis of a perfect phoxonic crystal of circular holes. A plain core waveguide was then defined, and simultaneous slow light and elastic guided modes were identified for some waveguide width. Joint guidance of light and elastic waves is predicted with group velocities as low as c/25 and 180 m/s, respectively. © 2011 Optical Society of America.

Descripción: This paper was published in OPTICS EXPRESS and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/OE.19.009690. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law

URI: http://hdl.handle.net/10251/31052

Fecha: 2011

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