Ribbing Carl G, Högström Herman, Rung Andreas
Department of Engineering Sciences, Uppsala University, P.O. Box 534, Uppsala SE 751 21, Sweden.
Appl Opt. 2006 Mar 1;45(7):1575-82. doi: 10.1364/ao.45.001575.
In a photonic band structure two kinds of gaps with different origins can be observed. Photonic gaps are determined by the symmetry of the photonic crystal, the lattice constant, and the contrast of the dielectric functions for the two components. Polaritonic gaps originate from the bulk optical properties of one of the components. Excitation of ionic components in the lattice results in a photon energy interval in which the dielectric function is negative. Here we investigate the interaction between photonic gaps and polaritonic gaps in one-dimensional and two-dimensional photonic structures. In particular, we show that by such interactions the polaritonic gap can be made wider and stronger, be left unchanged, or be made to vanish.
在光子带结构中，可以观察到两种起源不同的禁带。光子禁带由光子晶体的对称性、晶格常数以及两种组分的介电函数对比度决定。极化激元禁带源于其中一种组分的体光学性质。晶格中离子组分的激发会导致介电函数为负的光子能量区间。在此，我们研究一维和二维光子结构中光子禁带与极化激元禁带之间的相互作用。特别地，我们表明通过这种相互作用，极化激元禁带可以变宽变强、保持不变或消失。
