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Nano Lett. 2009 Jan;9(1):235-8. doi: 10.1021/nl802830y.

Planar lenses based on nanoscale slit arrays in a metallic film.

Author information

1
E. L. Ginzton Laboratory, Geballe Laboratory for Advanced Materials (GLAM), Stanford University, Stanford, California 94305, USA.

Abstract

We experimentally demonstrate planar lenses based on nanoscale slit arrays in a metallic film. Our lens structures consist of optically thick gold films with micron-size arrays of closely spaced, nanoscale slits of varying widths milled using a focused ion beam. We find excellent agreement between electromagnetic simulations of the design and confocal measurements on manufactured structures. We provide guidelines for lens design and show how actual lens behavior deviates from simple theory.

PMID:
19053795
DOI:
10.1021/nl802830y
[Indexed for MEDLINE]

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