Modulation of Splitting Beam Angle with Metal--Nonlinear Optical Material--Metal (M-NL-M) Array Structure |
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| Authors: | WANG Xiao-Lei WANG Pei MIN Chang-Jun CHEN Jun-Xue LU Yong-Hua MING Hai |
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| Affiliation: | Institute of Photonics, University of Science and Technology of China, Anhui Key Laboratory of Optoelectronic Science and Technology, Hefei 230026 |
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| Abstract: | We demonstrate active manipulating plasmonic signals with metal--nonlinear optical material--metal (M-NL-M) arrays consisting of slits with variant widths. The parameters of the M-NL-M array structure are derived by theoretical analysis of dispersion relationship. The splitting angle can be modulated by the incident light intensity, and verified by a nonlinear two-dimensional finite difference time domain method. The physical principle of this phenomenon is analysed from the phase of surface plasmon polaritons and Fabry--Pérot (F-P) resonance in slits |
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| Keywords: | 71.36.+c 73.20.Mf 42.60.Fc 42.65.-k |
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