Open AccessHigh-Harmonic Inverse-Free-Electron-Laser Interaction at 800 nm
Author(s) -
Christopher M. S. Sears,
Eric R. Colby,
B. Cowan,
R. Siemann,
J.E. Spencer,
Robert L. Byer,
T. Plettner
Publication year - 2005
Publication title -
physical review letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.688
H-Index - 673
eISSN - 1079-7114
pISSN - 0031-9007
DOI - 10.1103/physrevlett.95.194801
Subject(s) - harmonics , inverse , harmonic , high harmonic generation , transverse plane , laser , electron , cathode ray , physics , free electron laser , atomic physics , surface second harmonic generation , tracking (education) , optics , materials science , computational physics , quantum mechanics , mathematics , geometry , structural engineering , voltage , engineering , psychology , pedagogy
The inverse Free Electron Laser (IFEL) interaction has recently been proposed and used as a short wavelength modulator for micro bunching of beams for laser acceleration experiments [1,2]. These experiments utilized the fundamental of the interaction between the laser field and electron bunch. In the current experiment, we explore the higher order resonances of the IFEL interaction from a 3 period, 1.8 centimeter wavelength undulator with a picosecond, 0.5 mJ/pulse laser at 800nm. The resonances are observed by adjusting the gap of the undulator while keeping the beam energy constant. We also compare the experimental results to a simple analytic model that describes coupling to high order harmonics of the interaction.
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