Production and Characterization of Attosecond Bunch Trains
We report the production of optically spaced attosecond microbunches produced by the inverse Free Electron Laser (IFEL) process. The IFEL is driven by a Ti:sapphire laser synchronized with the electron beam. The IFEL is followed by a magnetic chicane that converts the energy modulation into the longitudinal microbunch structure. The microbunch train is characterized by observing Coherent Optical Transition Radiation (COTR) at multiple harmonics of the bunching. The experimental results are compared with 1D analytic theory showing good agreement. Estimates of the bunching factors are given and correspond to a microbunch length of 350as fwhm. The formation of stable attosecond electron pulse trains marks an important step towards direct laser acceleration.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-76SF00515
- OSTI ID:
- 929293
- Report Number(s):
- SLAC-PUB-13114; PRLTAO; TRN: US0803573
- Journal Information:
- Phys.Rev.ST Accel.Beams 11:061301,2008, Journal Name: Phys.Rev.ST Accel.Beams 11:061301,2008; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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