Analysis of light scattering off photonic crystal slabs in terms of Feshbach resonances
Department of Condensed Matter, The Weizmann Institute of
2 Institute for Theoretical Physics III, University of Erlangen-Nürnberg, Staudstrasse 7, 91058 Erlangen, Germany
a e-mail: firstname.lastname@example.org
Published online: 6 September 2012
Techniques to deal with Feshbach resonances are applied to describe resonant light scattering off one dimensional photonic crystal slabs. Accurate expressions for scattering amplitudes, free of any fitting parameter, are obtained for isolated as well as overlapping resonances. They relate the resonance properties to the properties of the optical structure and of the incident light. For the most common case of a piecewise constant dielectric function, the calculations can be carried out essentially analytically. After establishing the accuracy of this approach we demonstrate its potential in the analysis of the reflection coefficients for the diverse shapes of overlapping, interacting resonances.
Key words: Optical Phenomena and Photonics
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag 2012