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 phase difference with (a) φ = 0, (b) φ = 0.5 π , (c) φ = 0.8 π , respectively and the ratio of the mixing laser amplitude α = 0.3.