Terahertz laser based on a hyperbolic metamaterial consisting of thin layers of graphene
O.N. Kozina, 1,
L.A. Melnikov, 2
1 Kotel’nikov Institute of Radio-Engineering and Electronics of Russian Academy of Science, Saratov Branch Saratov, Russia;
2 Yuri Gagarin State Technical University of Saratov, Saratov, Russia
Abstract
Theoretical investigation of the terahertz lasing in the cavity containing graphene-based asymmetric hyperbolic metamaterial was present. The metamaterial under investigation is a nanoscale structure composed of periodically arranged layers of a semiconductor and inverted graphene. The aim of study is development of the component base for creating devices for terahertz generation and manipulation. The radiation characteristics in the cavity have been investigated by the transfer matrix method. A hyperbolic metamaterial is considered as a homogeneous medium with effective parameters due to the smallness of its period. The optimal conditions and parameters of the structure for an effective terahertz generation have been determined by numerical simulation. Generation linewidth, graphene saturation intensity, radiation power and the impact of the geometric parameters of structure on the process of terahertz wave generation have been estimated.
Speaker
Olga Kozina
Kotel’nikov Institute of Radio-Engineering and Electronics of Russian Academy of Science, Saratov Branch
Russia
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