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| VOLUME 89 | ISSUE 2 |
PAGE 70
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| Terahertz laser based on optically pumped graphene: model and feasibility of realization |
V. Ya. Aleshkin, A. A. Dubinov, V. Ryzhii+*
Institute for Physics of Microstructures RAS, 603950 Nizhny Novgorod, Russia
+University of Aizu, 965-8580 Aizu-Wakamatsu, Japan
*Japan Science and Technology Agency, CREST, 107-0075 Tokyo, Japan
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PACS: 78.66.-w, 81.05.Uw
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Abstract
We consider a
terahertz laser based on optically pumped
graphene layer and bilayer as the active media
and suggested waveguide structure. Using the developed
model, we calculate the spectral dependences the dynamic
conductivity of the optically pumped
graphene layer and bilayer associated with the interband and intraband
transitions,
estimate the pumping optical power required
for lasing, and demonstrate the feasibility of realization
of such a laser.
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