Controlling free electrons with optical whispering-gallery modes

Ofer Kfir*, Hugo Lourenço-Martins, Gero Storeck, Murat Sivis, Tyler R. Harvey, Tobias J. Kippenberg, Armin Feist, Claus Ropers

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


We show that optical microcavities drive strong coherent modulations the in co-propagating free-electron beams, with sidebands spanning over 700eV from a sub-µm-long interaction. The electrons probe the cavity’s ringdown time and distinguish the modes spectrally.

Original languageEnglish
Title of host publicationCLEO
Subtitle of host publicationQELS_Fundamental Science, CLEO_QELS 2020
PublisherOptica Publishing Group (formerly OSA)
ISBN (Print)9781943580767
StatePublished - 2020
Externally publishedYes
EventCLEO: QELS_Fundamental Science, CLEO_QELS 2020 - Washington, United States
Duration: 10 May 202015 May 2020

Publication series

NameOptics InfoBase Conference Papers
VolumePart F182-CLEO-QELS 2020
ISSN (Electronic)2162-2701


ConferenceCLEO: QELS_Fundamental Science, CLEO_QELS 2020
Country/TerritoryUnited States


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