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Metal nanoslit lenses with polarization-selective design |
Optics Letters, Vol. 36, Issue 4, pp. 451-453 (2011)
http://dx.doi.org/10.1364/OL.36.000451
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Abstract
We present comprehensive studies on thin diffraction lenses made of arrays of subwavelength, parallel nanoslits in a gold film. Such a nanoslit lens can operate either as a conventional convex or concave lens. The lenses can be designed to focus linearly polarized light with polarization either perpendicular (TM-lens) or parallel to the slits (TE-lens), while the orthogonal polarization diverges when passing through the lens. The designs of each lens are initially built on the dispersion relations for wave propagation through a parallel-plate waveguide. Both TM- and TE-lenses were realized experimentally, and full-wave numerical simulations fully support the experimental results.
© 2011 Optical Society of America
OCIS Codes
(230.0230) Optical devices : Optical devices
(250.5403) Optoelectronics : Plasmonics
(310.6628) Thin films : Subwavelength structures, nanostructures
(310.6805) Thin films : Theory and design
ToC Category:
Diffraction and Gratings
History
Original Manuscript: November 8, 2010
Revised Manuscript: December 27, 2010
Manuscript Accepted: January 1, 2011
Published: February 2, 2011
Citation
Satoshi Ishii, Alexander V. Kildishev, Vladimir M. Shalaev, Kuo-Ping Chen, and Vladimir P. Drachev, "Metal nanoslit lenses with polarization-selective design," Opt. Lett. 36, 451-453 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-4-451
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