Effect of elliptical polarizations on nonsequential double ionization in two-color elliptically polarized laser fields*

Project supported by the National Natural Science Foundation of China (Grant No. 61575077) and the Natural Science Foundation of Jilin Province, China (Grant No. 20180101225JC).
Xu Tong-Tong, Chen Jia-He, Pan Xue-Fei, Zhang Hong-Dan, Ben Shuai, Liu Xue-Shen †
       

(color online) The typical NSDI trajectory of Ar atoms in the two-color elliptically polarized laser pulses for different ellipticities: (a) and (d) ε2 = 0.0, (b) and (e) ε2 = 0.4, (c) and (f) ε2 = 1.0, at the combined laser intensity of 0.2 PW/cm2. The top row shows trajectories of first ionized electron coming back to the parent ion core with the “short trajectory” (ttr ≤ 0.5 o.c.). The bottom row shows trajectories of the first ionized electron coming back to the parent ion core with the “long trajectory” (ttr > 0.5 o.c.).