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Proposal for a tunable graphene-based terahertz Landau-level laser by Brem, Samuel; Wendler, Florian; Malic, Ermin is a scholarly article available to read on EtoBox.

What is Proposal for a tunable graphene-based terahertz Landau-level laser about?

In the presence of strong magnetic fields the electronic bandstructure of graphene drastically changes. The Dirac cone collapses into discrete non-equidistant Landau levels, which can be externally tuned by changing the magnetic field. In contrast to conventional materials, specific Landau levels are selectively addressable using circularly polarized light. Exploiting these unique properties, we propose the design of a tunable laser operating in the technologically promising terahertz spectral range. To uncover the many-particle physics behind the emission of light, we perform a fully quantum mechanical investigation of the non-equilibrium dynamics of electrons, phonons, and photons in optically pumped Landau-quantized graphene embedded into an optical cavity. The gained microscopic insights allow us to predict optimal experimental conditions to realize a technologically promising terahertz laser.

Author

Brem, Samuel; Wendler, Florian; Malic, Ermin

Published

2016

Language

EN