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Electrically Control Lateral Shift Owning to Guided-Wave Surface Plasmon Resonance with a Lithium Niobate Prism |
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| Authors: | Kang Yongqiang Gao Peng Zhang Jing Ren Wenyi |
| Institution: | 1.Institute of Solid State Physics, Shanxi Datong University, Datong, 037009, Shanxi, China ;2.College of Mathematical and Physical Sciences, Qingdao University of Science and Technology, Qingdao, 266061, China ;3.Key Laboratory of Environment Change and Resources Use in Beibu Gulf, Ministry of Education and Guangxi Key, Laboratory of Earth Surface Processes and Intelligent Simulation, Guangxi Teachers Education University, Nanning, 530023, China ;4.School of Science, Northwest A&F University, Yangling, 712100, China ; |
| Abstract: | Electrically controlled lateral shift by an electro-optic crystal prism is studied theoretically. The resonance point of excitation of guided-wave surface plasmon resonance (GWSPR) can be controlled by altering the refractive index of the prism. That is to say, the positions corresponding to the least reflectivity and the largest lateral shift could be conveniently modulated while the lithium niobate prism is operated in an external electric field. The maximal lateral shift is obtained at the excitation of GWSPR when the thickness of the silver film is optimized. The results of numerical simulations confirm theoretical calculation. |
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