Free-electron interaction with nonlinear optical states in microresonators
成果类型：
Article
署名作者：
Yang, Yujia; Henke, Jan-Wilke; Raja, Arslan S.; Kappert, F. Jasmin; Huang, Guanhao; Arend, Germaine; Qiu, Zheru; Feist, Armin; Wang, Rui Ning; Tusnin, Aleksandr; Tikan, Alexey; Ropers, Claus; Kippenberg, Tobias J.
署名单位：
Swiss Federal Institutes of Technology Domain; Ecole Polytechnique Federale de Lausanne; Swiss Federal Institutes of Technology Domain; Ecole Polytechnique Federale de Lausanne; University of Gottingen
刊物名称：
SCIENCE
ISSN/ISSBN：
0036-12061
DOI：
10.1126/science.adk2489
发表日期：
2024-01-12
页码：
168-173
关键词：
摘要：
The short de Broglie wavelength and strong interaction empower free electrons to probe structures and excitations in materials and biomolecules. Recently, electron-photon interactions have enabled new optical manipulation schemes for electron beams. In this work, we demonstrate the interaction of electrons with nonlinear optical states inside a photonic chip-based microresonator. Optical parametric processes give rise to spatiotemporal pattern formation corresponding to coherent or incoherent optical frequency combs. We couple such microcombs to electron beams, demonstrate their fingerprints in the electron spectra, and achieve ultrafast temporal gating of the electron beam. Our work demonstrates the ability to access solitons inside an electron microscope and extends the use of microcombs to spatiotemporal control of electrons for imaging and spectroscopy.