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The surface plasmon resonance of metal-film nanohole arrays
Authors:Renlong Zhou  Xiaoshuang Chen  Shaowei Wang  Wei Lu  Yong Zeng  Hongbo Chen  Hongjian Li  Hui Xia  Lingling Wang
Affiliation:1. College of Physics, Hunan University of Science and Technology, Xiangtan 411201, PR China;2. National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 200083 Shanghai, PR China;3. College of Physics Science and Technology, Central South University, Changsha 410082, PR China;4. School of Physics and Microelectronics, Hunan University, Changsha 410082, PR China;1. Department of Physics and Nanotechnology, Aalborg University, Skjernvej 4A, 9210 Aalborg, Denmark;2. Institute of Physics, University of Rostock, Universitätplatz 3, 18051 Rostock, Germany;1. Key Laboratory of Materials Physics, and Anhui Key Laboratory of Nanomaterials and Nanostructures, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, Anhui, 230031, People''s Republic of China;2. University of Science and Technology of China, Hefei, 230026, People''s Republic of China;3. Key Laboratory of Ion Beam Bioengineering, Institute of Biotechnology & Agriculture Engineering, Hefei Institutes of Physical Sciences, Chinese Academy of Sciences, Hefei 230031, People''s Republic of China;1. Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz, Iran;2. Department of Electrical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran;3. Department of Electrical Engineering, Imam Khomeini International University, Qazvin, Iran;1. College of Science, Lanzhou University of Technology, Lanzhou 730050, China;2. Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China
Abstract:In this paper we investigated the enhanced transmission and surface plasmon resonance through a thin gold film with a periodic array of subwavelength nanoholes. Both freestanding gold-film nanohole arrays and gold-film nanohole arrays deposited on a gallium arsenide (GaAs) substrate are considered. Periodic arrays of nanoholes exhibit two different surface plasmon resonance features: localized waveguide resonance and the well-recognized photonic crystal resonance. The tangential electric field component Ey is nonzero only in the hole region for a freestanding gold-film nanohole array, but it can exist in the hole region and in the metallic region for a gold-film nanohole array deposited on a GaAs substrate.
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