Bilayer graphene in strong ultrafast laser fields

We theoretically investigate the interaction of an ultrastrong femtosecond-long linearly polarized optical pulse with AB-stacked bilayer graphene. The excite electrons from valence into conduction band, resulting in finite band population. Such a redistribution results generation current which can be manipulated by angle incidence pulse. For normal incidence, along direction transverse to polarization is zero. However, interlayer symmetry broken up causes induction electric perpendicular $x$-$z$ plane show that magnitude and such as well charge transfer this tuning laser Further, system prohibits if $y$-direction.