Broadband coupling of fast electrons to high-Q whispering gallery mode resonators

  title={Broadband coupling of fast electrons to high-Q whispering gallery mode resonators},
  author={Niklas M{\"u}ller},
  journal={ACS Photonics},
  • N. Müller
  • Published 1 March 2021
  • Physics
  • ACS Photonics
Transmission electron microscopy is an excellent experimental tool to study the interaction of free electrons with nanoscale light fields. However, up to now, applying electron microscopy to quantum optical investigations was hampered by the lack of experimental platforms which allow a strong coupling between fast electrons and high-quality resonators. Here, as a first step, we demonstrate the broad-band excitation of optical whispering-gallery modes in silica microresonators by fast electrons… 
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