Microscopic Modeling of Pump-Probe Spectroscopy and Population Inversion in Transition Metal Dichalcogenides
Artikel i vetenskaplig tidskrift, 2020

Optical properties of transition metal dichalcogenide (TMD) monolayers are dominated by excitonic effects. These are significantly altered at high carrier densities, leading to energy renormalization, absorption bleaching, and even optical gain. Such effects are experimentally accessible in ultra-fast pump-probe measurements. Herein, the semiconductor Bloch equations are combined with the generalized Wannier equation to investigate the effect that excited carriers have on the excitonic properties of TMD monolayers. In particular, the dynamics of carrier occupation, energy renormalization, and absorption bleaching as well as population inversion and optical gain are investigated.

strong excitation

excitons

carrier dynamics

transition metal dichalcogenides

Författare

Raul Perea Causin

Chalmers, Fysik, Kondenserad materie- och materialteori

Samuel Brem

Chalmers, Fysik, Kondenserad materie- och materialteori

Ermin Malic

Chalmers, Fysik, Kondenserad materie- och materialteori

Physica Status Solidi (B): Basic Research

0370-1972 (ISSN) 1521-3951 (eISSN)

Vol. In Press 2000223

Excitondynamik i atomiskt tunna material

Vetenskapsrådet (VR), 2019-01-01 -- 2024-12-31.

Graphene Core Project 3 (Graphene Flagship)

Europeiska kommissionen (EU), 2020-04-01 -- 2023-03-31.

Ämneskategorier

Atom- och molekylfysik och optik

Annan fysik

Den kondenserade materiens fysik

DOI

10.1002/pssb.202000223

Mer information

Senast uppdaterat

2020-09-15