Coherent and tunable radiation with power enhancement from surface plasmon polaritons*
Gong Sen†, Zhong Ren-Bin, Hu Min, Chen Xiao-Xing, Zhang Ping, Zhao Tao, Liu Sheng-Gang
       
Contour maps of the excited SPPs, the thickness of the film is 50 nm, and the dielectric medium is BGO: (a) contour map of E z at 850 THz for β = 0.6 (asymmetrical mode); (b) contour map of E z at 607 THz for β = 0.3 (symmetrical mode); (c) contour map of E z at 874 THz for β = 0.3 (asymmetrical mode).