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Modulation of Splitting Beam Angle with Metal--Nonlinear Optical Material--Metal (M-NL-M) Array Structure |
WANG Xiao-Lei, WANG Pei, MIN Chang-Jun, CHEN Jun-Xue, LU Yong-Hua,
MING Hai |
| Institute of Photonics, University of Science and Technology of China, Anhui Key Laboratory of Optoelectronic Science and Technology, Hefei 230026 |
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| Cite this article: |
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WANG Xiao-Lei, WANG Pei, MIN Chang-Jun et al 2008 Chin. Phys. Lett. 25 4375-4377 |
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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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Received: 12 September 2008
Published: 27 November 2008
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| PACS: |
71.36.+c
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(Polaritons (including photon-phonon and photon-magnon interactions))
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73.20.Mf
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(Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))
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42.60.Fc
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(Modulation, tuning, and mode locking)
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42.65.-k
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(Nonlinear optics)
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