Research progress of femtosecond surface plasmon polariton

Wang Yulong¹, Zhao Bo², Min Changjun^{1, †}, Zhang Yuquan¹, Yang Jianjun², Guo Chunlei², Yuan Xiaocong^{1, ‡}

(a) Fabricating 2D subwavelength rectangle array on Molybdenum surface based on the SPP excitation under irradiation of two-color temporally-delayed femtosecond laser pulses.^[93] (b)–(c) Fabricating 2D subwavelength circle and triangle array on Tungsten surface based on the SPP excitation under irradiation of temporally-delayed femtosecond laser double pulses.^[94,95]