THz-driven zero-slippage IFEL scheme for phase space manipulation

E. Curry, S. Fabbri, P. Musumeci, A. Gover

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


Wedescribe an inverse free electron laser (IFEL) interaction driven by a near single-cycle THz pulse that is group velocity-matched to an electron bunch inside a waveguide, allowing for a sustained interaction in a magnetic undulator.Wediscuss the application of this guided-THz IFEL technique for compression of a relativistic electron bunch and synchronization with the external laser pulse used to generate the THz pulse via optical rectification, as well as a laser-driven THz streaking diagnostic with the potential for femtosecond scale temporal resolution. Initial measurements of the THz waveform via an electro-optic sampling based technique confirm the predicted reduction of the group velocity, using a curved parallel plate waveguide, as a function of the varying aperture size of the guide. Wealso present the design of a proof-of-principle experiment based on the bunch parameters available at the UCLA PEGASUS laboratory. With a 10 MV m-1THz peak field, our simulationmodel predicts compression of a6 MeV100 fs electron beam by nearly an order of magnitude and a significant reduction of its initial timing jitter.

Original languageEnglish
Article number113045
JournalNew Journal of Physics
Issue number11
StatePublished - Nov 2016


FundersFunder number
National Science FoundationPHY-1415583
U.S. Department of EnergyDE-SC0009914
United States-Israel Binational Science Foundation


    • THz waveguide
    • electron beam compression
    • electron beam manipulation
    • inverse free electron laser
    • streaking diagnostic
    • submillimeter wave instrumentation


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