A spiral plasmonic lens with directional excitation of surface plasmons
نویسندگان
چکیده
منابع مشابه
A spiral plasmonic lens with directional excitation of surface plasmons
Conventional plasmonic lenses are composed of curved slits carved through metallic films. Here, we propose a new plasmonic lens based on a metallic slit with an auxiliary groove. When the lens is illumined normally, only inward surface plasmon polaritons (SPPs) can be generated and then focused into a hot spot at the center of the lens. The focusing effect is theoretically investigated by varyi...
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Chengjun Zou,1 Withawat Withayachumnankul,1 Ilya V. Shadrivov,2 Yuri S. Kivshar,2 and Christophe Fumeaux1,* 1School of Electrical & Electronic Engineering, The University of Adelaide, Adelaide, SA 5005, Australia 2Nonlinear Physics Centre, The Australian National University, Canberra, ACT 2601, Australia (Received 9 December 2014; revised manuscript received 9 February 2015; published 27 Februa...
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ژورنال
عنوان ژورنال: Scientific Reports
سال: 2016
ISSN: 2045-2322
DOI: 10.1038/srep32345