Ultra-refraction phenomena in Bragg mirrors
Didier Felbacq, Brahim Guizal, Frederic Zolla
Abstract
We show numerically for the first time that ultra-refractive phenomena do exist in one-dimensional photonic crystals: we exhibit the main features of ultra-refraction, that is the enlargement and the splitting of an incident beam. We give a very simple explanation of these phenomena in terms of the photonic band structure of these media.
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