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)
       
Electron spectra as a function of the angle between the two lasers’ polarization directions in two-color laser fields with ω 1 = 1.165 eV, and ω 2 = 2 ω 1 (a), 4 ω 1 (b), 6 ω 1 (c), 8 ω 1 (d), 10 ω 1 (e), 30 ω 1 (f). The laser intensity I 1 = I 2 = 3.6 × 1013 W/cm2.