Surface plasmon polaritons generated magneto–optical Kerr reversal in nanograting

Chen Le-Yi^{1, 2}, Zong Zhen-Xing¹, Gao Jin-Long¹, Tang Shao-Long^{1, †}, Du You-Wei¹

(a) Longitudinal Kerr rotation of Co and Ag/Co/Ag nanograting sample with p-polarized light incidental 45°. Longitudinal Kerr rotation of flat Co film is plotted as a contrast. (b) Longitudinal Kerr rotation loops of nanograting samples at specified wavelengths with p-polarized light incident at 45°.