Coupling Light into Graphene Plasmons through Surface Acoustic Waves

• DOI: 10.1103/physrevlett.111.237405
• Publication Date: 2013-12-05T19:09:18Z
• Authors: Jürgen Schiefele; Jorge Pedrós; Fernando Sols; Fernando Calle; Francisco Guinea
• Keywords: Surface phonon

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