Free Electron Lasers Seeded by ir Laser Driven High-order Harmonic Generation

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Coherent x-ray production by a seeded free electron laser (FEL) is important for next generation synchrotron light sources. We examine the feasibility and features of FEL emission seeded by a high-order harmonic of an infrared laser (HHG). In addition to the intrinsic FEL chirp, the longitudinal profile and spectral bandwidth of the HHG seed are modified significantly by the FEL interaction well before saturation. This smears out the original attosecond pulselet structure. We introduce criteria for this smearing effect on the pulselet and the stretching effect on the entire pulse. We discuss the noise issue in such a seeded FEL.

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4 pages

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Wu, Juhao; Bolton, Paul R.; Murphy, James B. & Zhong, Xinming March 12, 2007.

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Coherent x-ray production by a seeded free electron laser (FEL) is important for next generation synchrotron light sources. We examine the feasibility and features of FEL emission seeded by a high-order harmonic of an infrared laser (HHG). In addition to the intrinsic FEL chirp, the longitudinal profile and spectral bandwidth of the HHG seed are modified significantly by the FEL interaction well before saturation. This smears out the original attosecond pulselet structure. We introduce criteria for this smearing effect on the pulselet and the stretching effect on the entire pulse. We discuss the noise issue in such a seeded FEL.

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4 pages

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  • Journal Name: Appl.Phys.Lett.90:021109,2007; Journal Volume: 90

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  • Report No.: SLAC-PUB-11891
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 891475
  • Archival Resource Key: ark:/67531/metadc874787

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Office of Scientific & Technical Information Technical Reports

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  • March 12, 2007

Added to The UNT Digital Library

  • Sept. 21, 2016, 2:29 a.m.

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  • July 26, 2017, 9:34 a.m.

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Wu, Juhao; Bolton, Paul R.; Murphy, James B. & Zhong, Xinming. Free Electron Lasers Seeded by ir Laser Driven High-order Harmonic Generation, article, March 12, 2007; [Menlo Park, California]. (digital.library.unt.edu/ark:/67531/metadc874787/: accessed December 13, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.