Optical beam focusing with a metal slit array arranged along a semicircular surface and its optimization with a genetic algorithm
Applied Optics, Vol. 49, Issue 7, pp. A30-A35 (2010)
http://dx.doi.org/10.1364/AO.49.000A30
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Abstract
A metal slit array arranged along a semicircular surface achieving subwavelength optical beam focusing along the lateral direction is proposed. Taking into consideration surface plasmon polaritons that pass through a metal slit array, we design the array with a curvature. By use of a genetic algorithm, the size of the metal slit and the corresponding curvature are to be determined. Based on our metal slit array configuration, the full width at half-maximum can be achieved on a subwavelength scale.
© 2010 Optical Society of America
OCIS Codes
(230.3120) Optical devices : Integrated optics devices
(240.6680) Optics at surfaces : Surface plasmons
History
Original Manuscript: August 13, 2009
Revised Manuscript: November 19, 2009
Manuscript Accepted: November 21, 2009
Published: December 14, 2009
Virtual Issues
Vol. 5, Iss. 6 Virtual Journal for Biomedical Optics
Citation
Dawoon Choi, Yongjun Lim, Sookyoung Roh, Il-Min Lee, Jaehoon Jung, and Byoungho Lee, "Optical beam focusing with a metal slit array arranged along a semicircular surface and its optimization with a genetic algorithm," Appl. Opt. 49, A30-A35 (2010)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-49-7-A30
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