Electrically pumped graphene-based Landau-level laser
Artikel i vetenskaplig tidskrift, 2018

Graphene exhibits a nonequidistant Landau quantization with tunable Landau-level (LL) transitions in the technologically desired terahertz spectral range. Here, we present a strategy for an electrically driven terahertz laser based on Landau-quantized graphene as the gain medium. Performing microscopic modeling of the coupled electron, phonon, and photon dynamics in such a laser, we reveal that an inter-LL population inversion can be achieved resulting in the emission of coherent terahertz radiation. The presented paper provides a concrete recipe for the experimental realization of tunable graphene-based terahertz laser systems.

Författare

Samuel Brem

Chalmers, Fysik, Kondenserade materiens teori

Florian Wendler

Chalmers, Fysik, Kondenserade materiens teori

Stephan Winnerl

Helmholtz

Ermin Malic

Chalmers, Fysik, Kondenserade materiens teori

Physical Review Materials

Vol. 2 3 034002

Ämneskategorier

Atom- och molekylfysik och optik

Annan fysik

Annan elektroteknik och elektronik

DOI

10.1103/PhysRevMaterials.2.034002

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Senast uppdaterat

2020-09-15