Coupling light into graphene plasmons through surface acoustic waves

• Main Authors: Schiefele, Jürgen, Pedrós, Jorge, Sols, Fernando, Calle, Fernando, Guinea, Francisco
• Format: Journal Article
• Language: English
• Published: 03-09-2013
• Subjects: Physics - Materials Science; Physics - Mesoscale and Nanoscale Physics; Physics - Optics
• DOI: 10.48550/arxiv.1309.0767

Phys. Rev. Lett. 111, 237405 (2013) We propose a scheme for coupling laser light into graphene plasmons with the
help of electrically generated surface acoustic waves. The surface acoustic
wave forms a diffraction grating which allows to excite the long lived
phonon-like branch of the hybridized graphene plasmon-phonon dispersion with
infrared laser light. Our approach avoids patterning the graphene sheet, does
not rely on complicated optical near-field techniques, and allows to
electrically switch the coupling between far field radiation and propagating
graphene plasmons.