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Directional emission of stadium-shaped micro-lasers

M. Lebental·J. -S. Lauret·J. Zyss·C. Schmit·E. Bogomolny
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Abstract

The far-field emission of two dimensional (2D) stadium-shaped dielectric cavities is investigated. Micro-lasers with such shape present a highly directional emission. We provide experimental evidence of the dependance of the emission directionality on the shape of the stadium, in good agreement with ray numerical simulations. We develop a simple geometrical optics model which permits to explain analytically main observed features. Wave numerical calculations confirm the results.

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M. Lebental, J. -S. Lauret, J. Zyss, C. Schmit, E. Bogomolny. 2006-09-01. Directional emission of stadium-shaped micro-lasers. https://doi.org/10.1103/physreva.75.033806

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