An extraordinary directive radiation based on optical antimatter at near infrared

被引：25

作者：

Mocella, Vito ^{[1
]}

Dardano, Principia ^{[1
]}

Rendina, Ivo ^{[1
]}

Cabrini, Stefano ^{[2
]}

机构：

[1] CNR IMM Unita Napoli, I-80131 Naples, Italy

[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Mol Foundry, Berkeley, CA 94720 USA

来源：

OPTICS EXPRESS | 2010年 / 18卷 / 24期

关键词：

NEGATIVE REFRACTION;

D O I：

10.1364/OE.18.025068

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this paper we discuss and experimentally demonstrate that in a quasi- zero-average-refractive-index (QZAI) metamaterial, in correspondence of a divergent source in near infrared (lambda = 1.55 mu m) the light scattered out is extremely directive (Delta theta(out) = 0.06 degrees), coupling with diffraction order of the alternating complementary media grating. With a high degree of accuracy the measurements prove also the excellent vertical confinement of the beam even in the air region of the metamaterial, in absence of any simple vertical confinement mechanism. This extremely sensitive device works on a large contact area and open news perspective to integrated spectroscopy. (C) 2010 Optical Society of America

引用

页码：25068 / 25074

页数：7

共 16 条

[1] Three-dimensional nanotransmission lines at optical frequencies:: A recipe for broadband negative-refraction optical metamaterials [J].