Terahertz lasers based on optically pumped multiple graphene structures with slot-line and dielectric waveguides

Abstract

Terahertz (THz) lasers on optically pumped multiple-graphene-layer (MGL) structures as their active region are proposed and evaluated. The developed device model accounts for the interband and intraband transitions in the degenerate electron-hole plasma generated by optical radiation in the MGL structure and the losses in the slot or dielectric waveguide. The THz laser gain and the conditions of THz lasing are found. It is shown that the lasers under consideration can operate at frequencies > 1 THz at room temperatures.

7 pages, 10 figures

References in corpus (5)

• The electronic properties of graphene
• Selective transmission of Dirac electrons and ballistic magnetoresistance of \textit{n-p} junctions in graphene
• Photocurrent imaging and efficient photon detection in a graphene transistor
• How perfect can graphene be?
• Feasibility of terahertz lasing in optically pumped epitaxial multiple graphene layer structures

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• Recent advances in terahertz photonic technologies based on graphene and their applications
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• Tunneling Recombination in Optically Pumped Graphene with Electron-Hole Puddles
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• Theoretical analysis of injection driven thermal light emitters based on graphene encapsulated by hexagonal boron nitride