A low-threshold nanolaser based on hybrid plasmonic waveguides at the deep subwavelength scale*
Li Zhi-Quan†, Piao Rui-Qi, Zhao Jing-Jing, Meng Xiao-Yun, Tong Kai
       
Comparison of lasing threshold between the present hybrid plasmonic waveguide and the previous hybrid plasmonic waveguide[ 15 ] with different gap width w for the cases of nanowire radii r 2 = 40 nm, 50 nm, 60 nm ( h = 30 nm, d = 20 nm, r 3 = 2 r 1 + w /2 + d ).