Abstract-Photon-drag-induced terahertz emission from graphene

Petr A. Obraztsov1,2,*, Natsuki Kanda3,4, Kuniaki Konishi5, Makoto Kuwata-Gonokami4,5,6, Sergey V. Garnov1, Alexander N. Obraztsov2,7, and Yuri P. Svirko2

• 1A. M. Prokhorov General Physics Institute, Moscow, Russia
• 2Department of Physics and Mathematics, University of Eastern Finland, Joensuu, Finland
• 3Laser Technology Laboratory, RIKEN, Saitama, Japan
• 4Photon Science Center, The University of Tokyo, Tokyo, Japan
• 5Institute for Photon Science and Technology, The University of Tokyo, Tokyo, Japan
• 6Department of Physics, The University of Tokyo, Tokyo, Japan
• 7Department of Physics, M. V. Lomonosov Moscow State University, Moscow, Russia

• *p.obraztsov@gmail.com
• https://journals.aps.org/prb/abstract/10.1103/PhysRevB.90.241416

We report the investigation of a strong interband photon drag effect in multilayer graphene leading to efficient emission of terahertz radiation. The obtained terahertz photoresponse of graphene layers exhibits peculiarities fundamentally predicted for free carrier transport in two-dimensional electronic systems. Owing to significant light absorption in gapless graphene, where each absorbed photon produces an electron-hole pair with the highest possible kinetic energy, the photon drag mechanism provides a possibility to achieve efficient conversion of light into broadband terahertz radiation as well as new ways towards vectorial control of the generated terahertz radiation in graphene-based materials.

DOI: http://dx.doi.org/10.1103/PhysRevB.90.241416

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• Published 29 December 2014
• Received 9 October 2014

©2014 American Physical Society