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Plasmonic nanostructures for local field enhancement in the UV region
Affiliation:1. Ulyanovsk Branch of Kotel’nikov Institute of Radio Engineering and Electronics of Russian Academy of Sciences, 432011 Ulyanovsk, Russia;2. Technological Research Institute, Ulyanovsk State University, 432700 Ulyanovsk, Russia;3. CREOL, The College of Optics and Photonics, University of Central Florida, 32816 Orlando, FL, USA;4. National Research University of Information Technologies, Mechanics and Optics, 197101 St. Petersburg, Russia;5. Kotel’nikov Institute of Radio Engineering and Electronics of Russian Academy of Sciences, 125009 Moscow, Russia;1. Computing Department, Faculty of Arts, Computing and Creative Industry, Sultan Idris Education University (UPSI), 35900 Tanjong Malim, Perak, Malaysia;2. College of Engineering and Technology, University of Derby, Derby DE22 3AW, UK;3. Department of Mechanical Engineering, Mohammad Ali Jinnah University, Islamabad, Pakistan;4. Advanced Technovation Ltd., Loughborough Innovation Centre, Loughborough University Science & Enterprise Park (Holywell Park), Loughborough LE11 3AQ, UK;1. Department of Electrical Engineering, The State University of New York at Buffalo, Buffalo, NY 14260, USA;2. Department of Electrical and Computer Engineering, Lehigh University, Bethlehem, PA 18015, USA;3. Department of Chemistry, Northwestern University, Evanston, IL 60208, USA;1. School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, People''s Republic of China;2. Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100190, People''s Republic of China;1. Materials Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia;2. IBM T.J. Watson Research Center, 1101 Kitchawan Road, Yorktown Heights, NY 10598, USA;1. Photonics Research Center, School of Electronic and Communications Engineering, Dublin Institute of Technology, Kevin Street, Dublin 8, Ireland;2. Department of Electronic Engineering, City University of Hong Kong, Hong Kong, China;3. School of Physics, Trinity College Dublin, Dublin 2, Ireland;4. CRANN, Trinity College, Dublin 2, Ireland
Abstract:In this work we describe an ultraviolet subwavelength focusing in plasmonic nanostructures. A system which provides a 20–25 times local field enhancement at a wavelength of 350 nm is proposed. This system represents a metalized V-shaped groove in a surface of a dielectric medium. Subwavelength focusing is achieved by a plasmon wave propagation along the surface of metal film and by the transfer of electromagnetic field through the dielectric medium. The influence of system parameters on a local field enhancement is investigated. A simplified model that allows for determining the geometric parameters of an optimized resonator is proposed.
Keywords:Plasmonic nanostructures  Ultraviolet  Local field enhancement
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