Abstract
Localized surface plasmon resonances occurring within subwavelength apertures are accompanied by an aperture-geometry-dependent phase shift that can be utilized for beam manipulation. Here we demonstrate two- dimensional, planar, converging and diverging plasmonic lenses, formed by an array of nanometric spatially varying cross-shaped apertures in a silver film. The performance of lenses with different design configurations was evaluated at two different wavelengths using a confocal scanning optical microscope.
© 2011 Optical Society of America
Full Article | PDF ArticleMore Like This
X. M. Goh, L. Lin, and A. Roberts
Opt. Express 18(11) 11683-11688 (2010)
Paul G. Thompson, Claudiu G. Biris, Edward J. Osley, Ophir Gaathon, Richard M. Osgood, Nicolae C. Panoiu, and Paul A. Warburton
Opt. Express 19(25) 25035-25047 (2011)
Jonas Beermann, Sergey M. Novikov, Thomas Søndergaard, Jens Rafaelsen, Kjeld Pedersen, and Sergey I. Bozhevolnyi
J. Opt. Soc. Am. B 28(3) 372-378 (2011)