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7 March 2022 Photonic-chip based microresonators as a platform for efficient free-electron light interaction
Jan-Wilke Henke, Arslan S. Raja, Armin Feist, Guanhao Huang, Germaine Arend, Yujia Yang, F. Jasmin Kappert, Rui Ning Wang, Marcel Möller, Jiahe Pan, Junqiu Liu, Ofer Kfir, Tobias J. Kippenberg, Claus Ropers
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Proceedings Volume PC11999, Ultrafast Phenomena and Nanophotonics XXVI; PC1199903 (2022) https://doi.org/10.1117/12.2608161
Event: SPIE OPTO, 2022, San Francisco, California, United States
Abstract
Strong coupling in the interaction of free electrons with photons will allow for the exploration of various new effects. Here, we demonstrate CW-driven inelastic electron-photon scattering at a fiber-integrated high-Q Si3N4 microresonator, enabled by resonant field enhancement and electron-light phase matching. Employing energy-filtered imaging and laser detuning-dependent measurements, we characterise the electron’s interaction with the whispering gallery mode spatially and spectrally. Finally, we discuss prospects of electron-driven photon generation in the resonator. This combination of electron microscopy and integrated photonics opens up new paths for optical electron beam modulation, electron probing of nonlinear optical effects and free-electron cavity quantum optics.
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Jan-Wilke Henke, Arslan S. Raja, Armin Feist, Guanhao Huang, Germaine Arend, Yujia Yang, F. Jasmin Kappert, Rui Ning Wang, Marcel Möller, Jiahe Pan, Junqiu Liu, Ofer Kfir, Tobias J. Kippenberg, and Claus Ropers "Photonic-chip based microresonators as a platform for efficient free-electron light interaction", Proc. SPIE PC11999, Ultrafast Phenomena and Nanophotonics XXVI, PC1199903 (7 March 2022); https://doi.org/10.1117/12.2608161
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KEYWORDS
Microresonators
Electrons
Photonic microstructures
Laser scattering
Scattering
Continuous wave operation
Electron beams
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