Production and Characterization of Attosecond Bunch Trains

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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 ... continued below

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10 pages

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Sears, Christopher M.S.; Colby, Eric; Ischebeck, Rasmus; McGuinness , Christopher; Nelson, Janice; Noble, Robert et al. June 2, 2008.

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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.

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10 pages

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  • Journal Name: Phys.Rev.ST Accel.Beams 11:061301,2008

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  • Report No.: SLAC-PUB-13114
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 929293
  • Archival Resource Key: ark:/67531/metadc902432

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  • June 2, 2008

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  • Sept. 27, 2016, 1:39 a.m.

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  • Nov. 30, 2016, 6:27 p.m.

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Sears, Christopher M.S.; Colby, Eric; Ischebeck, Rasmus; McGuinness , Christopher; Nelson, Janice; Noble, Robert et al. Production and Characterization of Attosecond Bunch Trains, article, June 2, 2008; [Menlo Park, California]. (digital.library.unt.edu/ark:/67531/metadc902432/: accessed September 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.