Proposal for a tunable graphene-based terahertz Landau-level laser

Abstract

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.

6 pages article, 3 pages supplementary material

References in corpus (5)

• Landau level spectroscopy of ultrathin graphite layers
• Magnetoplasmons excitations in graphene for filling factors $\nu \le 6$
• Carrier multiplication in graphene under Landau quantization
• Continuous wave lasing between Landau levels in graphene
• Laser induced modulation of the Landau level structure in single-layer graphene

Cited by in corpus (7)

• Suppressed Auger scattering and tunable light emission of Landau-quantized massless Kane electrons
• Terahertz cyclotron emission from two-dimensional Dirac fermions
• Nonlinear magneto-optic effects in doped graphene and gapped graphene: a perturbative treatment
• Criteria for deterministic single-photon emission in two-dimensional atomic crystals
• Difference frequency generation of surface plasmon-polaritons in Landau quantized graphene
• Gate tunable terahertz cyclotron emission from two-dimensional Dirac fermions
• Nonperturbative model for optical response under intense periodic fields with application to graphene in a strong perpendicular magnetic field