Polarization control of attosecond pulses using bi-chromatic elliptically polarized laser

We study the higher-harmonic generation (HHG) using elliptically polarized two-color driving fields. The HHG via bi-chromatic counter-rotating laser fields is a promising source of circularly ultrashort XUV radiation at attosecond time scale. ellipticity or polarization pulses can be tweaked by modifying emitted harmonics' ellipticity, which controlled varying driver propose simple setup to control fields, eventually changes pulses. A well-defined scaling law for pulse as function rotation angle quarter-wave plate also deduced solving time-dependent Schrodinger equation (TDSE) in two dimensions. further explored obtain desired degree polarization, ranging from linear elliptical circular polarization.