Transmission properties of periodically patterned triangular prisms |
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| Institution: | 1. School of Physics and Optoelectronic Engineering, Xidian University, Xi׳an 710071, China;2. National Laboratory of Science and Technology on Antennas and Microwaves, Xidian University, Xi׳an 710071, China;1. University School of Basic & Applied Sciences, Guru Gobind Singh Indraprastha University, New Delhi 110078, India;2. School of Pure and Applied Physics, Mahatma Gandhi University, Kottayam, Kerala 686560, India;3. Applied Nuclear Physics Division, Saha Institute of Nuclear Physics, Kolkata 700064, India;4. Vivekananda College of Technology & Management, Aligarh 202002, India;1. State Key Laboratory of Advanced Optical Communication Systems and Networks, Key Laboratory for Laser Plasmas (Ministry of Education), Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China;2. Department of Physics, Cornell University, 117 Clark Hall, Ithaca, NY 14853, United States |
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| Abstract: | Transmission properties of plasmonic structure arrays are simulated by finite element method. The array unit is composed of two combined triangular prisms. Results reveal that several resonant modes are found in the transmission spectra, which are due to the resonance of the surface plasmon polariton in the metal slit or to the localized surface plasmon resonance of the combined prisms. The resonant wavelengths can be tuned by changing the structural parameters of the combined prisms. In addition, the resonant modes are sensitive to small refractive index changes of the surrounding media, revealing potential detection applications in nanophotonic systems. |
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| Keywords: | Plasmonics Surface plasmon polariton (SPP) Localized surface plasmon (LSP) |
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