Abstract

A well-established, silver fishnet design has been further miniaturized to function as a negative-index material at the shortest wavelength to date (to our knowledge). By studying the transmittance, reflectance, and corresponding numerical simulations of the sample, we report in this Letter a negative refractive index of 0.25 at the yellow-light wavelength of 580nm.

© 2009 Optical Society of America

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