THz wave emission from argon in two-color laser field*
Du Ling-Linga), Zhao Song-Fenga), Zhou Xiao-Xina)†, Zhao Zeng-Xiub)‡
       
The THz emission spectra obtained from the whole wave function (solid line) and the continuum wave function only (dash–dotted line) for the fixing fundamental laser field with (a) α = 0, (b) α = 0.3, (c) α = 0.5, (d) α = 0.7, respectively, and phase difference φ = 0.