Efficient plasmonic emission by the quantum Čerenkov effect from hot carriers in graphene
Name
Efficient Plasmonic Emission.pdf
Size
1.12 MB
Format
Adobe PDF
Checksum (MD5)
b916fab136c2837f1b9ef7a7653f76d2
Author(s)
Kaminer, Ido Efraim
Katan, Yaniv Tenenbaum
Buljan, Hrvoje
Shen, Yichen
Ilic, Ognjen
Lopez, Josue Jacob
Wong, Liang Jie
Joannopoulos, John
Soljacic, Marin
Date Issued
June 2016
Journal
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
Abstract
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.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution 4.0 International License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1038/ncomms11880
