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
2008 Chinese Physics Letters  
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
more » ... on polaritons and Fabry-Pérot (F-P) resonance in slits.
doi:10.1088/0256-307x/25/12/053 fatcat:rkyqxug2enf3rdn4f2snc6mip4