Free electron nanolaser based on the graphene plasmons
| Autor: | H. H. Matevosyan, Hamlet K. Avetissian, G. F. Mkrtchian, B. R. Avchyan |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Free electron model
Materials science Condensed Matter - Mesoscale and Nanoscale Physics business.industry Graphene Nanolaser FOS: Physical sciences Physics::Optics Condensed Matter Physics Industrial and Manufacturing Engineering Atomic and Molecular Physics and Optics Photon upconversion law.invention law Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Optoelectronics business Instrumentation Lasing threshold Plasmon |
| Popis: | In this paper, a possible way to achieve lasing from THz to extreme UV domain due to stimulated scattering of graphene plasmons on the free electrons is considered. The analytical-quantitative description of the proposed FEL scheme is based on the self-consistent set of the Maxwell--Vlasov equations. We study the downconversion as well as the upconversion. It is shown that the coherent downconversion of infrared radiation to THz one can be achieved using a source of very non-relativistic electrons at the resonant coupling with the graphene plasmons. Due to the strongly confined graphene plasmons, the upconversion of mid-infrared to extreme UV radiation can be achieved with the mildly relativistic electron beams. The latter is a promising mechanism for the tabletop short-wavelength free electron nanolaser. 16 pages, 3 figures |
| Databáze: | OpenAIRE |
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