Observation of negative refraction and negative phase velocity in left-handed metamaterials

Koray Aydin; Kaan Guven; Costas M. Soukoulis; Ekmel Ozbay

doi:10.1063/1.1888051

Observation of negative refraction and negative phase velocity in left-handed metamaterials

Koray Aydin^*, Kaan Guven, Costas M. Soukoulis, Ekmel Ozbay

^*Corresponding author for this work

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

111 Scopus citations

Abstract

We report the transmission characteristics of a two-dimensional (2D) composite metamaterial (CMM) structure in free space. At the frequencies where left-handed transmission takes place, we experimentally confirmed that the CMM structure has effective negative refractive index. Phase shift between consecutive numbers of layers of CMM is measured and phase velocity is shown to be negative at the relevant frequency range. Refractive index values obtained from the refraction experiments and the phase measurements are in good agreement.

Original language	English (US)
Article number	124102
Pages (from-to)	1-3
Number of pages	3
Journal	Applied Physics Letters
Volume	86
Issue number	12
DOIs	https://doi.org/10.1063/1.1888051
State	Published - Mar 21 2005

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.1888051

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title = "Observation of negative refraction and negative phase velocity in left-handed metamaterials",

abstract = "We report the transmission characteristics of a two-dimensional (2D) composite metamaterial (CMM) structure in free space. At the frequencies where left-handed transmission takes place, we experimentally confirmed that the CMM structure has effective negative refractive index. Phase shift between consecutive numbers of layers of CMM is measured and phase velocity is shown to be negative at the relevant frequency range. Refractive index values obtained from the refraction experiments and the phase measurements are in good agreement.",

author = "Koray Aydin and Kaan Guven and Soukoulis, {Costas M.} and Ekmel Ozbay",

note = "Funding Information: This work is supported by EU-DALHM, EU-METAMORPHOSE, EU-PHOREMOST, and DARPA Contract No. MDA 972-01-2-0016. Ames Laboratory is operated for the U. S. Department of Energy by Iowa State University under Contract No. W-7405-ENG-82. One of the authors (E. O.) acknowledges partial support from Turkish Academy of Sciences.",

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AU - Aydin, Koray

AU - Guven, Kaan

AU - Soukoulis, Costas M.

AU - Ozbay, Ekmel

N1 - Funding Information: This work is supported by EU-DALHM, EU-METAMORPHOSE, EU-PHOREMOST, and DARPA Contract No. MDA 972-01-2-0016. Ames Laboratory is operated for the U. S. Department of Energy by Iowa State University under Contract No. W-7405-ENG-82. One of the authors (E. O.) acknowledges partial support from Turkish Academy of Sciences.

PY - 2005/3/21

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N2 - We report the transmission characteristics of a two-dimensional (2D) composite metamaterial (CMM) structure in free space. At the frequencies where left-handed transmission takes place, we experimentally confirmed that the CMM structure has effective negative refractive index. Phase shift between consecutive numbers of layers of CMM is measured and phase velocity is shown to be negative at the relevant frequency range. Refractive index values obtained from the refraction experiments and the phase measurements are in good agreement.

AB - We report the transmission characteristics of a two-dimensional (2D) composite metamaterial (CMM) structure in free space. At the frequencies where left-handed transmission takes place, we experimentally confirmed that the CMM structure has effective negative refractive index. Phase shift between consecutive numbers of layers of CMM is measured and phase velocity is shown to be negative at the relevant frequency range. Refractive index values obtained from the refraction experiments and the phase measurements are in good agreement.

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Observation of negative refraction and negative phase velocity in left-handed metamaterials

Abstract

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