Terahertz generation from graphene surface plasmon polaritons excited by a cyclotron electron beam

Authors

Tao Zhao, University of Electronic Science and Technology of China
Min Hu, University of Electronic Science and Technology of China
Renbin Zhong, University of Electronic Science and Technology of China
Xiaoxing Chen, University of Electronic Science and Technology of China
Ping Zhang, University of Electronic Science and Technology of ChinaFollow
Sen Gong, University of Electronic Science and Technology of China
C Zhang, University of WollongongFollow
Shenggang Liu, University of Electronic Science and Technology of China

RIS ID

111392

Publication Details

Zhao, T., Hu, M., Zhong, R., Chen, X., Zhang, P., Gong, S., Zhang, C. & Liu, S. (2016). Terahertz generation from graphene surface plasmon polaritons excited by a cyclotron electron beam. International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz (pp. 1-2). United States: IEEE.

Abstract

A novel physical mechanism is reported which can generate coherent and tunable terahertz (THz) radiation. Due to the natural periodicity of 2¿ of circular cylindrical graphene structure, the surface plasmon polaritions (SPPs), excited by a cyclotron electron beam (CEB), can be transformed into radiation. The radiation density is strongly enhanced over two orders, up to 105 W/cm2. The radiation frequency can be widely tuned by adjusting the beam energy and chemical potential. This mechanism opens a way for developing room temperature, tunable, coherent and intense pulsed or even CW THz radiation sources to cover the whole THz frequency regime.