Challenges to create graphene terahertz lasers

2nd Russia-Japan-USA Symposium on the Fundamental and Applied Problems of Terahertz Devices and Technologies

Otsuji, Taiichi^1 ; Satou, Akira^1 ; Ryzhii, Maxim^2 ; Popov, Vyachaslav^3 ; Mitin, Vladimir^4 ; Ryzhii, Victor^1

Research Institute of Electrical Communication, Tohoku University, Japan^1

Computational Nano-Electronics Laboratoty, University of Aizu, Japan^2

Kotelnikov Institute of Radio Engineering and Electronics (Saratov Branch), RAS, Russia^3

Department of Electrical Engineering, University at Buffalo, SUNY, United States^4

关键词: Electrically pumped;    Linear energy;    Negative dynamic conductivities;    Population inversions;    Terahertz lasers;    Terahertz range;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/486/1/012007/pdf
DOI  :  10.1088/1742-6596/486/1/012007

来源: IOP

【 摘 要 】

The gapless, linear energy spectrum of graphene can lead to population inversion and negative dynamic conductivity in the terahertz range when graphene is optically or electrically pumped, which makes it possible to create a new type of graphene terahertz lasers. This paper reviews recent advances in scientific challenges to create graphene-based terahertz lasers.