Semiclassical quantization rules and numerical calculations are applied to study polariton modes of materials whose permittivity tensor has principal values of opposite sign (so-called hyperbolic materials). The spectra of volume- and surface-confined polaritons are computed for spheroidal nanogranules of hexagonal boron nitride, a natural hyperbolic crystal. The field distribution created by polaritons excited by an external dipole source is predicted to exhibit ray-like patterns due to classical periodic orbits. Near-field infrared imaging and Purcell-factor measurements are suggested to test these predictions.
@article{arxiv.1502.06524,
title = {Hamiltonian optics of hyperbolic polaritons in nanogranules},
author = {Zhiyuan Sun and A. Gutierrez-Rubio and D. N. Basov and M. M. Fogler},
journal= {arXiv preprint arXiv:1502.06524},
year = {2015}
}
Comments
Changes made to improve presentation and update references. Main text: 6 pages, 6 figures. Supplementary: 12 pages, 6 figures