  We theoretically investigated the Floquet states of bilayer graphene
heterostructure under the irradiation by horizontally incident circular
polarized light. The in-plane and out-of-plane electric field of the light
periodically perturbs the intra-layer and inter-layer hopping, respectively.
For circular polarized light, the two components of the electric field has
$\pi/2$ phase difference, so that the two types of hopping are periodically
perturbed with the $\pi/2$ phase difference, which modify the effective
inter-layer hopping. We focus on the model of bilayer graphene in the
heterostructure of antiferromagnetic van der Walls spin valve. The amplitude of
the irradiation can tune the band gap and topological properties of the bulk
state. The spin-polarized quantum anomalous Hall phase with Chern number being
one is predicted. The incident angle of the irradiation can tune the band gap
and dispersion of the edge states in zigzag nanoribbons.
