Influence of multi-photon excitation on the atomic above-threshold ionization*
Tian Yuan-Yea),b), Wang Chun-Chenga),b), Li Su-Yua),b), Guo Fu-Minga),b), Ding Da-Juna),b), Wim-G Roeterdinka),b), Chen Ji-Genc), Zeng Si-Liangd),e), Liu Xue-Shena),b), Yang Yu-Juna),b)†
       
Evolutions of the photoelectron emission spectrum with incident intensity when the wavelengths of the incident laser are selected to be (a) 760 nm, (b) 780 nm, and (c) 800 nm, respectively.