Theoretical investigation on generating terahertz radiation from gas plasma induced by three-color ultrashort lasers
Wang Cheng-Lianga), Yang Zhen-Gangb), Liu Jin-Songa), Wang Sheng-Lieb), Wang Ke-Jia†a)
       
((a), (b), (d), and (e)) Maximum THz yields versus relative phase θ 3, and ((c) and (f)) comparisons between the increment of THz radiation and that of the two-color scheme.