Temporal control of graphene plasmons

被引：26
|
作者：
Wilson, Josh [1 ]
Santosa, Fadil [1 ]
Min, Misun [2 ]
Low, Tony [3 ]
机构：
[1] Univ Minnesota, Sch Math, Minneapolis, MN 55455 USA
[2] Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA
[3] Univ Minnesota, Dept Elect & Comp Engn, Minneapolis, MN 55455 USA
来源：
PHYSICAL REVIEW B | 2018年 / 98卷 / 08期
关键词：
TIME-REVERSAL; TERAHERTZ; WAVES;
D O I：
10.1103/PhysRevB.98.081411
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Electrostatic gating and optical pumping schemes enable efficient time modulation of graphene's free-carrier density, or Drude weight. We develop a theory for plasmon propagation in graphene under temporal modulation. When the modulation is on the timescale of the plasmonic period, we show that it is possible to create a backwards propagating or standing plasmon wave and to amplify plasmons. The theoretical models show very good agreement with direct Maxwell simulations.
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页数：5
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