Hamiltonian Optics of Hyperbolic Polaritons in Nanogranules

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• 作者：Zhiyuan Sun ; 脕. Guti茅rrez-Rubio ; D. N. Basov ; M. M. Fogler
• 刊名：Nano Letters
• 出版年：2015
• 出版时间：July 8, 2015
• 年：2015
• 卷：15
• 期：7
• 页码：4455-4460
• 全文大小：367K
• ISSN：1530-6992

文摘

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 raylike patterns due to classical periodic orbits. Near-field infrared imaging and Purcell-factor measurements are suggested to test these predictions.