Single-layer terahertz metamaterials with bulk optical constants

被引：19

作者：

Chen, W. -C. ^{[1
]}

Totachawattana, A. ^{[1
]}

Fan, K. ^{[2
]}

Ponsetto, J. L. ^{[1
]}

Strikwerda, A. C. ^{[3
]}

Zhang, X. ^{[2
]}

Averitt, R. D. ^{[3
]}

Padilla, W. J. ^{[1
]}

机构：

[1] Boston Coll, Dept Phys, Chestnut Hill, MA 02467 USA

[2] Boston Univ, Dept Mech Engn, Brookline, MA 02446 USA

[3] Boston Univ, Dept Phys, Boston, MA 02215 USA

来源：

PHYSICAL REVIEW B | 2012年 / 85卷 / 03期

关键词：

D O I：

10.1103/PhysRevB.85.035112

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigate the conditions under which single layer metamaterials may be described by bulk optical constants. Terahertz time domain spectroscopy is utilized to investigate two types of geometries, both with two different sizes of embedding dielectric-cubic and tetragonal unit cells. The tetragonal metamaterials are shown to yield layer dependent optical constants, whereas the cubic metamaterials yielded layer independent optical constants. We establish guidelines for when epsilon and mu can be used as material parameters for single layer metamaterials. Experimental results at terahertz frequencies are presented and supported by full wave three-dimensional electromagnetic simulations.

引用

页数：6

共 41 条

[1] Effective-medium theory of surfaces and metasurfaces containing two-dimensional binary inclusions [J].