Yang, YujiaCattaneo, PaoloRaja, Arslan S.Weaver, BruceWang, Rui NingSapozhnik, AlexeyCarbone, FabrizioLaGrange, ThomasKippenberg, Tobias J.2025-01-262025-01-262025-01-25202410.1364/cleo_si.2024.sf1p.22-s2.0-85215276599https://infoscience.epfl.ch/handle/20.500.14299/245249We establish a frequency link across the microwave, optical, and free-electron domains by a photonic chip-based electron phase modulator driven by a continuous-wave laser locked to a fully stabilized optical frequency comb.falseElectron opticsFree electron lasersFrequency modulationMasersMicrowave photonicsOptical fiber communicationOptical harmonic generationOptical modulationPhase modulationSpectroscopyUnifying Optical Frequency Metrology with Free-Electron Spectroscopytext::conference output::conference proceedings::conference paper