• 文献标题:   Feasibility of terahertz lasing in optically pumped epitaxial multiple graphene layer structures
  • 文献类型:   Article
  • 作  者:   RYZHII V, RYZHII M, SATOU A, OTSUJI T, DUBINOV AA, ALESHKIN VY
  • 作者关键词:  
  • 出版物名称:   JOURNAL OF APPLIED PHYSICS
  • ISSN:   0021-8979 EI 1089-7550
  • 通讯作者地址:   Univ Aizu
  • 被引频次:   107
  • DOI:   10.1063/1.3247541
  • 出版年:   2009

▎ 摘  要

A multiple graphene layer (MGL) structure with a stack of GLs and a highly conducting bottom GL on SiC substrate pumped by optical radiation is considered as an active region of terahertz and far infrared lasers with external metal mirrors. The dynamic conductivity of the MGL structure is calculated as a function of the signal frequency, the number of GLs, and the optical pumping intensity. The utilization of optically pumped MGL structures might provide the achievement of lasing with the frequencies of about 1 THz at room temperature due to a high efficiency of pumping. (C) 2009 American Institute of Physics. [doi:10.1063/1.3247541]