Focusing by planoconcave lens using negative refraction

被引：74

作者：

Vodo, P

Parimi, PV

Lu, WT

Sridhar, S

机构：

[1] Northeastern Univ, EMRI, Boston, MA 02115 USA

[2] Northeastern Univ, Dept Phys, Boston, MA 02115 USA

来源：

APPLIED PHYSICS LETTERS | 2005年 / 86卷 / 20期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.1927712

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate focusing of a plane microwave by a planoconcave lens fabricated from a photonic crystal having a negative refractive index and left-handed electromagnetic properties. An inverse experiment, in which a plane wave is produced from a source placed at the focal point of the lens, is also reported. A frequency-dependent negative refractive index, n(omega)< 0 is obtained for the lens from the experimental data which match well with that determined from band structure calculations. (c) 2005 American Institute of Physics.

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页码：1 / 3

页数：3

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