Efficient plasmonic emission by the quantum Čerenkov effect from hot carriers in graphene
Author(s)
Kaminer, Ido Efraim; Katan, Yaniv Tenenbaum; Buljan, Hrvoje; Shen, Yichen; Ilic, Ognjen; Lopez, Josue Jacob; Wong, Liang Jie; Joannopoulos, John; Soljacic, Marin; ... Show more Show less
DownloadEfficient Plasmonic Emission.pdf (1.123Mb)
PUBLISHER_CC
Publisher with Creative Commons License
Creative Commons Attribution
Terms of use
Metadata
Show full item recordAbstract
Graphene plasmons have been found to be an exciting plasmonic platform, thanks to their high field confinement and low phase velocity, motivating contemporary research to revisit established concepts in light–matter interaction. In a conceptual breakthrough over 80 years old, Čerenkov showed how charged particles emit shockwaves of light when moving faster than the phase velocity of light in a medium. To modern eyes, the Čerenkov effect offers a direct and ultrafast energy conversion scheme from charge particles to photons. The requirement for relativistic particles, however, makes Čerenkov emission inaccessible to most nanoscale electronic and photonic devices. Here we show that graphene plasmons provide the means to overcome this limitation through their low phase velocity and high field confinement. The interaction between the charge carriers flowing inside graphene and the plasmons enables a highly efficient two-dimensional Čerenkov emission, giving a versatile, tunable and ultrafast conversion mechanism from electrical signal to plasmonic excitation.
Date issued
2016-06Department
Massachusetts Institute of Technology. Department of PhysicsJournal
Nature Communications
Publisher
Nature Publishing Group
Citation
Kaminer, Ido, Yaniv Tenenbaum Katan, Hrvoje Buljan, Yichen Shen, Ognjen Ilic, Josué J. López, Liang Jie Wong, John D. Joannopoulos, and Marin Soljacic. Nature Communications 7, Article number: ncomms11880 (June 2016), pp.1-9.
Version: Final published version
ISSN
2041-1723