Conduction band population in graphene in ultrashort strong laser field: case of massive Dirac particles (Q2821310)

In the last few years, interaction of external electromagnetic fields with condensed matters has attracted several theoretical and experimental researches. It was recognized that a high intensity optical pulse can strongly affect the electron dynamics and, correspondingly, modify the transport and optical properties. Here, the effect of massive Dirac fermions on the inter-band transition in a gapped graphene interacting with an ultra short laser pulse is investigated. The analysis is focused on the inter-band mixing of the VB (valence) and CB (conduction) gaps separated from each other by a 2mvp energy gap. The result obtained are demonstrated by diagrams.