Mélanie Lebental 1, 2, Jean-Sébastien Lauret 1, Joseph Zyss 1, C. Schmit 2, E. Bogomolny 2
Physical Review A: Atomic, Molecular and Optical Physics 75 (2007) 033806
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.
- 1. Laboratoire de Photonique Quantique et Moléculaire (LPQM),
CNRS : UMR8537 – École normale supérieure de Cachan – ENS Cachan - 2. Laboratoire de Physique Théorique et Modèles Statistiques (LPTMS),
CNRS : UMR8626 – Université Paris XI – Paris Sud