Dependence of above-threshold ionization spectrum on polarization directions of two-color laser fields*
Liu Mina),b), Guo Ying-Chun†a), Wang Bing-Bing‡b)
       
ATI spectra as a function of the angle between the two lasers’ polarization directions for channel 1 (a), 2 (b), 3 (c), and 4 (d) with ω 1 = 1.165 eV, ω 2 = 2 ω 1. The laser intensity I 1 = I 2 = 3.6 × 1013 W/cm2.