Journal article
Plasmonic lenses for wavefront control applications using two-dimensional nanometric cross-shaped aperture arrays
XM Goh, L Lin, A Roberts
Journal of the Optical Society of America B Optical Physics | Published : 2011
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 twodimensional, 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.
Grants
Awarded by Australian Research Council
Funding Acknowledgements
This research was supported under the Australian Research Council's Discovery Projects funding scheme (project DP0878268). The authors also thank Dr. David Simpson of The University of Melbourne for assistance with the use of the confocal microscope.