Evanescent quadrupole polariton
Materials Science
2009-11-13 v1
Abstract
In the work we demonstrate the formation of new type of polariton on the interface between a cuprous oxide slab and a polystyrene micro-sphere placed on the slab. The evanescent field of the resonant whispering gallery mode (WGM) has a substantial gradient, and therefore effectively couples with the quadrupole excitons in cuprous oxide. This evanescent polariton has a long life-time (), which is determined only by its excitonic component. The polariton lower branch has a well pronounced minimum. This suggests that this excitation can be utilized for BEC. The spatial coherence of the polariton can be improved by assembling the micro-spheres in a linear chain.
Keywords
Cite
@article{arxiv.0705.0749,
title = {Evanescent quadrupole polariton},
author = {Oleksiy Roslyak and Joseph L. Birman},
journal= {arXiv preprint arXiv:0705.0749},
year = {2009}
}