Achieving subdiffraction imaging through bound surface states in negative refraction photonic crystals in the near-infrared range

被引：44

作者：

Chatterjee, R. ^{[1
]}

Panoiu, N. C. ^{[2
]}

Liu, K. ^{[1
]}

Dios, Z. ^{[1
]}

Yu, M. B. ^{[3
]}

Doan, M. T. ^{[3
]}

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

Osgood, R. M. ^{[1
]}

Wong, C. W. ^{[1
]}

机构：

[1] Columbia Univ, New York, NY 10027 USA

[2] UCL, London WC1E 7JE, England

[3] Inst Microelect, Singapore 117685, Singapore

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 18期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.100.187401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the observation of imaging beyond the diffraction limit due to bound surface states in negative refraction photonic crystals. We achieve an effective negative index figure of merit [-Re(n)/Im(n)] of at least 380, similar to 125x improvement over recent efforts in the near-infrared range, with a 0.4 THz bandwidth. Supported by numerical and theoretical analyses, the observed near-field resolution is 0.47 lambda, clearly smaller than the diffraction limit of 0.61 lambda. Importantly, we show this subdiffraction imaging is due to the resonant excitation of surface slab modes.

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页数：4

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