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Controlling plasmonic hot spots by interfering Airy beams

 
: Klein, Angela E.; Minovich, Alexander; Steinert, Michael; Janunts, Norik; Tünnermann, Andreas; Neshev, Dragomir N.; Kivshar, Yuri S.; Pertsch, Thomas

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Optics Letters 37 (2012), No.16, pp.3402-3404
ISSN: 0146-9592
English
Journal Article
Fraunhofer IOF ()

Abstract
We predict and demonstrate the generation of a plasmonic hot spot on the surface of a metal film by the interference of two Airy surface plasmons. We show that the position of the hot spot can be controlled by the distance between the excitation gratings as well as by the phase front of the initial excitation. The observed effect constitutes a planar analogy to Airy beam autofocusing and offers new opportunities for spatially resolved surface plasmon sensing and optical surface tweezers.

: http://publica.fraunhofer.de/documents/N-212524.html