Anisotropic enhancement of group velocity in a homogenized dielectric composite medium

被引：13

作者：

Mackay, TG ^{[1
]}

Lakhtakia, A

机构：

[1] Univ Edinburgh, Sch Math, Edinburgh EH9 3JZ, Midlothian, Scotland

[2] Penn State Univ, Dept Engn Sci & Mech, CATMAS, Computat & Theoret Mat Sci Grp, University Pk, PA 16802 USA

[3] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London SW7 2AZ, England

来源：

JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS | 2005年 / 7卷 / 11期

关键词：

group-velocity enhancement; Bruggeman homogenization formalism; uniaxial dielectric;

D O I：

10.1088/1464-4258/7/11/009

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Under certain circumstances, the group velocity in a homogenized composite medium (HCM) can exceed the group velocity in its component material phases. This phenomenon is explored for a uniaxial dielectric HCM comprising isotropic component material phases distributed as oriented spheroidal particles. The theoretical approach is based upon the Bruggeman homogenization formalism. Enhancement in group velocity in the HCM with respect to the component material phases turns out to be sensitively dependent upon the shape of the component spheroids and their alignment relative to the direction of propagation.

引用

页码：669 / 674

页数：6

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