Difference frequency generation of terahertz surface plasmons in graphene and topological insulators

Xianghan Yao; Mikhail Tokman; Alexey Belyanin

doi:10.1117/12.2040526

7 March 2014 Difference frequency generation of terahertz surface plasmons in graphene and topological insulators

Xianghan Yao, Mikhail Tokman, Alexey Belyanin

Proceedings Volume 8980, Physics and Simulation of Optoelectronic Devices XXII; 89801A (2014) https://doi.org/10.1117/12.2040526
Event: SPIE OPTO, 2014, San Francisco, California, United States

Abstract

Massless Dirac electrons in graphene and surface states of topological insulators have peculiar optical properties and strong coupling to light. Surface plasmons in these materials 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 difference frequency generation (DFG) of terahertz surface plasmon modes supported by two-dimensional layers of massless Dirac electrons, which includes monolayer 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.

Citation Download Citation

Xianghan Yao, Mikhail Tokman, and Alexey Belyanin "Difference frequency generation of terahertz surface plasmons in graphene and topological insulators", Proc. SPIE 8980, Physics and Simulation of Optoelectronic Devices XXII, 89801A (7 March 2014); https://doi.org/10.1117/12.2040526

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