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

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

2009-11-16

arxiv.org/abs/0911.2937v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 10 figures

Scientific paper

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.

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