Optical bulk and surface waves with negative refraction

被引:23
作者
Agranovich, VM
Shen, YR
Baughman, RH
Zakhidov, AA
机构
[1] Univ Texas, NanoTech Inst, Richardson, TX 75083 USA
[2] Russian Acad Sci, Inst Spect, Troitsk 142190, Moscow Obl, Russia
[3] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
关键词
negative group velocity; negative refraction; exciton resonances; spatial dispersion; additional waves; surface polaritons;
D O I
10.1016/j.jlumin.2004.08.004
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
In materials with negative refraction, the direction of wave propagation is opposite to the direction of the wave vector. Using an approach that characterizes the optical response of a medium totally by a generalized dielectric permittivity, epsilon(omega, k), we discuss the possibility of seeing negative refraction for optical waves in a number of nonmagnetic media. These include bulk waves in organic materials and in gyrotropic materials where additional exciton-polariton waves can have a negative group velocity. It is known that dispersion of surface waves can be engineered by tailoring a surface transition layer. We show how this effect can be used to obtain surface waves with negative refraction. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:167 / 173
页数:7
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