Yellow-light negative-index metamaterials.
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 580 nm.
Xiao
Shumin
S
School of Electrical and Computer Engineering and Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, USA.
Chettiar
Uday K
UK
Kildishev
Alexander V
AV
Drachev
Vladimir P
VP
Shalaev
Vladimir M
VM