Negative refraction through an impedance-matched left-handed metamaterial slab

Koray Aydin; Ekmel Ozbay

doi:10.1364/JOSAB.23.000415

Negative refraction through an impedance-matched left-handed metamaterial slab

Koray Aydin^*, Ekmel Ozbay

^*Corresponding author for this work

Electrical and Computer Engineering

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

23 Scopus citations

Abstract

We report the transmission and reflection characteristics of a two-dimensional (2D) left-handed metamaterial (LHM). A well-defined left-handed (LH) transmission band with a peak value of -9.9 dB is obtained at frequencies where both effective permittivity and permeability are negative. A very sharp dip (-38 dB) at the reflection spectrum due to impedance matching at the surface of a 2D LHM is observed. Gaussian beam shifting experiments are performed to study the LH properties of a LHM structure. The structure has a negative refraction of electromagnetic waves in a certain frequency range. The negative refractive index values obtained for four different incident angles are in good agreement.

Original language	English (US)
Pages (from-to)	415-418
Number of pages	4
Journal	Journal of the Optical Society of America B: Optical Physics
Volume	23
Issue number	3
DOIs	https://doi.org/10.1364/JOSAB.23.000415
State	Published - Mar 2006

ASJC Scopus subject areas

Statistical and Nonlinear Physics
Atomic and Molecular Physics, and Optics

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AB - We report the transmission and reflection characteristics of a two-dimensional (2D) left-handed metamaterial (LHM). A well-defined left-handed (LH) transmission band with a peak value of -9.9 dB is obtained at frequencies where both effective permittivity and permeability are negative. A very sharp dip (-38 dB) at the reflection spectrum due to impedance matching at the surface of a 2D LHM is observed. Gaussian beam shifting experiments are performed to study the LH properties of a LHM structure. The structure has a negative refraction of electromagnetic waves in a certain frequency range. The negative refractive index values obtained for four different incident angles are in good agreement.

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