Perfect subwavelength fishnetlike metamaterial-based film terahertz absorbers

被引：185

作者：

Shchegolkov, D. Yu. ^{[1
]}

Azad, A. K. ^{[1
]}

O'Hara, J. F. ^{[1
]}

Simakov, E. I. ^{[1
]}

机构：

[1] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

来源：

PHYSICAL REVIEW B | 2010年 / 82卷 / 20期

关键词：

D O I：

10.1103/PhysRevB.82.205117

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present two different designs of robust, easily manufactured metamaterial-based films of subwavelength thickness capable of full absorption of incident terahertz radiation at certain frequencies. Both designs allow a choice between the total absorption of all polarizations or only one linear polarization while the other polarization is reflected. Even if the films are optimized for normal incidence, the absorption remains greater than 99% for angles up to similar to 35 degrees in the TE and up to similar to 65 degrees in the TM case. In the first design, the maximum absorption frequency shifts considerably with angle, and in the second design it is independent of angle.

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页数：6

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