Near-field imaging by a multi-layer structure consisting of alternate right-handed and left-handed materials

被引：10

作者：

Gao, L

Tang, CJ

机构：

[1] CCAST, World Lab, Beijing 100080, Peoples R China

[2] Suzhou Univ, Dept Phys, Suzhou 215006, Peoples R China

来源：

PHYSICS LETTERS A | 2004年 / 322卷 / 5-6期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/j.physleta.2004.01.048

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The possibility of near-field imaging by a multi-layer structure with alternate layers of right-handed materials (RHM) and left-handed materials (LHM) is investigated. By means of the transfer-matrix method, we carry out the recovery rate and phase shift of evanescent waves arriving at the image plane. It is found that the multi-layer structure is very useful to decrease the influence of the necessary absorption in left-handed materials (LHM) on the image quality. We also show that the absorption may be useful to enhance the image quality when the real parts of the permittivity and permeability of left-handed materials (LHM) deviates from the perfect lens conditions. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：390 / 395

页数：6

共 22 条

[1] Simulated causal subwavelength focusing by a negative refractive index slab [J].