3 papers
cond-mat.mes-hall2020
Ultrafast strong-field absorption in gapped graphene
S. Azar Oliaei Motlagh, Ahmal Jawad Zafar, Aranyo Mitra +2
We study theoretically the strong-field absorption of an ultrafast optical pulse by a gapped graphene monolayer. At low field amplitudes, the absorbance in the pristine graphene is…
cond-mat.mes-hall2019
Ultrafast optical currents in gapped graphene
S. Azar Oliaei Motlagh, Fatemeh Nematollahi, Aranyo Mitra +3
We study theoretically the interaction of ultrashort optical pulses with gapped graphene. Such strong pulse results in finite conduction band population and corresponding electric…
cond-mat.mes-hall2018
Fundamentally fastest optical processes at the surface of a topological insulator
S. Azar Oliaei Motlagh, Jhih-Sheng Wu, Vadym Apalkov +1
We predict that a single oscillation of a strong optical pulse can significantly populate the surface conduction band of a three-dimensional topological insulator, Bi2Se3. Both lin…