55 citations · 68 across the 3 of their papers we have counts for
5 papers
Three-level Spaser System: a Semi-Classical Analysis
Rupesh Ghimire, Dalton . C. Hunley, Fatemeh Nematollahi +3
We theoretically study a nanospaser system, which consists of a spherical silver nanoparticle embedded inside a sphere composed of dye molecules. The gain of the system, dye molecu…
TMDC-based topological nanospaser: single and double threshold behavior
Rupesh Ghimire, Fatemeh Nematollahi, Jhih-Sheng Wu +2
We theoretically study a topological nanospaser, which consists of a silver nanospheroid and MoS monolayer ake of a circular shape. The metal nanospheroid acts as a plasmonic n…
Topological resonance and single-optical-cycle valley polarization in gapped graphene
S. Azar Oliaei Motlagh, Fatemeh Nematollahi, Vadym Apalkov +1
For gapped graphene, we predict that an intense ultrashort (single-oscillation) circularly-polarized optical pulse can induce a large population of the conduction band and a large…
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…
Topological resonance in Weyl semimetals in circularly-polarized optical pulse
Fatemeh Nematollahi, S. Azar Oliaei Motlagh, Jhih-Sheng Wu +3
We study theoretically the ultrafast electron dynamics of three-dimensional Weyl semimetals in the field of a laser pulse. For a circularly-polarized pulse, such dynamics is govern…