  We investigate the charge carrier dynamics in bilayer graphene subject to
monochromatic laser irradiation within the Landau level quantization regime.
Even though the radiation field does not lift the energy degeneracy of the
lowest Landau levels (LLs), it nevertheless has a strong effect on the
photoinduced pseudospin polarization response for higher LLs ($n\ge2$). Our
results show that the photoinduced bandgaps lead to a finite response of the
averaged pseudospin polarization with nontrivial oscillating behavior. It is
shown that the contribution from these higher LL transitions turns out to be
crucial to achieve an enhanced photoinduced polarization in radiated bilayer
graphene. The experimental feasibility of our findings is also discussed.
