We dispute Grigorenko’s statement [ Opt. Lett. 31, 2483 (2006) ] that measuring only the reflection intensity spectrum is sufficient for determining the effective refractive index. In addition, our simulations do not confirm his conclusions regarding the negative refractive index and the negative permeability of the nanopillar sample in the visible range.
© 2007 Optical Society of America
(160.4670) Materials : Optical materials
Original Manuscript: October 4, 2006
Revised Manuscript: December 8, 2006
Manuscript Accepted: December 21, 2006
Published: May 8, 2007
Alexander V. Kildishev, Vladimir P. Drachev, Uday K. Chettiar, Vladimir M. Shalaev, Douglas H. Werner, and Do-Hoon Kwon, "Comment on "Negative refractive index in artificial metamaterials"," Opt. Lett. 32, 1510-1511 (2007)