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Opt Lett. 2009 Mar 1;34(5):704-6.

Polarization-independent negative-index metamaterial in the near infrared.

Author information

1
Center for Innovation Competence "ultra optics," Institute of Applied Physics, Friedrich-Schiller-Universität Jena, Jena, Germany. christianhelgert@uni-jena.de

Abstract

We present and evaluate theoretically and experimentally a design for a negative-index metamaterial that is termed the "Swiss cross" structure. Compared with the established fishnet structure, the proposed design eliminates the drawback of polarization-dependent effective optical parameters. The new design is fabricated by means of e-beam technology and experimentally analyzed using spectroscopic techniques. The thorough comparison with numerical simulations reveals an effective refractive index of n=-1.9 at an operational wavelength of 1400 nm that is independent of the incident polarization. The resonances of the system are comprehensively discussed.

PMID:
19252599
DOI:
10.1364/ol.34.000704

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