Directional Emission from an Optical Microdisk Resonator with a Point Scatterer
Optics
2009-11-13 v1
Abstract
We present a new design of dielectric microcavities supporting modes with large quality factors and highly directional light emission. The key idea is to place a point scatterer inside a dielectric circular microdisk. We show that, depending on the position and strength of the scatterer, this leads to strongly directional modes in various frequency regions while preserving the high Q-factors reminiscent of the whispering gallery modes of the microdisk without scatterer. The design is very appealing due to its simplicity, promising a cleaner experimental realisation than previously studied microcavity designs on the one hand and analytic tractability based on Green's function techniques and self-adjoint extension theory on the other.
Cite
@article{arxiv.0705.3211,
title = {Directional Emission from an Optical Microdisk Resonator with a Point Scatterer},
author = {C. P. Dettmann and G. V. Morozov and M. Sieber and H. Waalkens},
journal= {arXiv preprint arXiv:0705.3211},
year = {2009}
}