Self-Collimation of Light over Millimeter-Scale Distance in a Quasi-Zero-Average-Index Metamaterial

被引：78

作者：

Mocella, V. ^{[1
]}

Cabrini, S. ^{[2
]}

Chang, A. S. P. ^{[2
]}

Dardano, P. ^{[1
]}

Moretti, L. ^{[1
]}

Rendina, I. ^{[1
]}

Olynick, D. ^{[2
]}

Harteneck, B. ^{[2
]}

Dhuey, S. ^{[2
]}

机构：

[1] Univ Naples Federico II, CNR IMM, I-80131 Naples, Italy

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

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 13期

关键词：

2-DIMENSIONAL PHOTONIC-CRYSTAL; NEGATIVE REFRACTION; SUPERLENS; FIELD; LENS;

D O I：

10.1103/PhysRevLett.102.133902

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Inspired by the concept of complementary media, we experimentally demonstrate that an engineered metamaterial made of alternating, stripe layers of negatively refracting (photonic crystals) and positively refracting (air) materials strongly collimates a beam of near-infrared light. This quasi-zero-average-index metamaterial fully preserves the beam spot size throughout the sample for a light beam traveling through the metamaterial a distance of 2 mm-more than 1000 times the input wavelength lambda=1.55 mu m. These results demonstrate the first explicit experimental verification of optical antimatter as proposed by Pendry and Ramakrishna [J. Pendry and S. Ramakrishna, J. Phys. Condens. Matter 15, 6345 (2003)], using two complementary media in which each n(eff)=-1 layer appears to annihilate an equal thickness layer of air.

引用

页数：4

共 24 条

[1] Achieving subdiffraction imaging through bound surface states in negative refraction photonic crystals in the near-infrared range [J].