Efficient nonlinear generation of THz plasmons in graphene and topological insulators

Xianghan Yao, Mikhail Tokman, Alexey Belyanin

Research output: Contribution to journalArticlepeer-review


Surface plasmons in graphene may provide an attractive alternative to noble-metal plasmons due to their tighter confinement, peculiar dispersion, and longer propagation distance. We present theoretical studies of the nonlinear difference frequency generation (DFG) of terahertz surface plasmon modes supported by two-dimensional layers of massless Dirac electrons, which includes graphene and surface states in topological insulators. Our results demonstrate strong enhancement of the DFG efficiency near the plasmon resonance and the feasibility of phase-matched nonlinear generation of plasmons over a broad range of frequencies.

Original languageEnglish
Article number055501
JournalPhysical Review Letters
Issue number5
StatePublished - 5 Feb 2014
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


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