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Terahertz two-dimensional plasmons in active graphene with diffusion pumping

Keywords:

I.M. Moiseenko – Post-graduate Student, Saratov State University.Е-mail: quikc@yandex.ru M.Yu. Morozov – Ph.D. (Phys.-Math.), Researcher, Kotelnikov IRE RAS (Saratov Branch) A.R. Davoyan – Ph.D., University of Pennsylvania, USA. V.V. Popov – Dr.Sc. (Phys.-Math.), Head of Laboratory, Kotelnikov IRE RAS (Saratov Branch)


The amplification of THz plasmons in graphene with diffusion pumping is theoretically studied. It is shown that the same amplification coefficient of plasma waves in graphene with the diffusion pump can be achieved for an order of magnitude smaller external optical pump power as compared to the direct optical pumping of graphene.
References:

 

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