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International Journal of Optics
Volume 2012 (2012), Article ID 879392, 6 pages
http://dx.doi.org/10.1155/2012/879392
Research Article

Deep Subwavelength Power Concentration-Based Hyperbolic Metamaterials

1Microsystems Engineering, Kate Gleason College of Engineering, Rochester Institute of Technology, Rochester, NY 14623, USA
2Department of Electrical and Microelectronic Engineering, Kate Gleason College of Engineering, Rochester Institute of Technology, Rochester, NY 14623, USA

Received 31 May 2012; Revised 6 August 2012; Accepted 27 August 2012

Academic Editor: Xiaoyue Huang

Copyright © 2012 Amanpreet Kaur et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Hyperbolic metamaterials can manipulate electromagnetic waves by converting evanescent waves into propagating waves and thus support light propagation without diffraction limit. In this paper, deep subwavelength focusing (or power concentration) is demonstrated both numerically and experimentally using hyperbolic metamaterials. The results verify that hyperbolic metamaterials can focus a broad collimated beam to spot size of ~λ0/6 using wired medium design for both normal and oblique incidence. The nonmagnetic design, no-cut-off operation, and preferred direction of propagation in these materials significantly reduce the attenuation in electromagnetic waves.