Enhanced acousto-optic properties in layered media

Abstract

We present a rigorous procedure for evaluating the photoelastic coefficients of a layered medium where the periodicity is smaller than the wavelengths of all optical and acoustic fields. Analytical expressions are given for the coefficients of a composite material comprising thin layers of optically isotropic materials. These coefficients include artificial contributions that are unique to structured media and arise from the optical and mechanical contrast between the constituents. Using numerical examples, we demonstrate that the acousto-optic properties of layered structures can be enhanced beyond those of the constituent materials. Furthermore, we show that the acousto-optic response can be tuned as desired.

arXiv comment9 pages, 4 figures

References in corpus (6)

• Cavity Optomechanics
• Interaction between light and highly confined hypersound in a silicon photonic nanowire
• Optimized optomechanical crystal cavity with acoustic radiation shield
• Stimulated Brillouin Scattering in integrated photonic waveguides: forces, scattering mechanisms and coupled mode analysis
• Metamaterial control of stimulated Brillouin scattering
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Cited by in corpus (4)

• Controlling phonons and photons at the wavelength-scale: silicon photonics meets silicon phononics
• NumBAT: The integrated, open source Numerical Brillouin Analysis Tool
• A unifying perspective on linear continuum equations prevalent in science. Part I: Canonical forms for static, steady, and quasistatic equations
• Stimulated Brillouin Scattering in layered media: nanoscale enhancement of silicon