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Highly coherent and stable pulses from the FERMI seeded free-electron laser in the extreme ultraviolet

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Author

  • E. Allaria
  • Roberto Appio
  • L. Badano
  • W. A. Barletta
  • S. Bassanese
  • S. G. Biedron
  • A. Borga
  • E. Busetto
  • D. Castronovo
  • P. Cinquegrana
  • S. Cleva
  • D. Cocco
  • M. Cornacchia
  • P. Craievich
  • I. Cudin
  • G. D'Auria
  • M. Dal Forno
  • M. B. Danailov
  • R. De Monte
  • G. De Ninno
  • P. Delgiusto
  • A. Demidovich
  • S. Di Mitri
  • B. Diviacco
  • A. Fabris
  • R. Fabris
  • W. Fawley
  • M. Ferianis
  • E. Ferrari
  • S. Ferry
  • L. Froehlich
  • P. Furlan
  • G. Gaio
  • F. Gelmetti
  • L. Giannessi
  • M. Giannini
  • R. Gobessi
  • R. Ivanov
  • E. Karantzoulis
  • M. Lonza
  • A. Lutman
  • B. Mahieu
  • M. Milloch
  • S. V. Milton
  • M. Musardo
  • I. Nikolov
  • S. Noe
  • F. Parmigiani
  • G. Penco
  • M. Petronio
  • L. Pivetta
  • M. Predonzani
  • F. Rossi
  • L. Rumiz
  • A. Salom
  • C. Scafuri
  • C. Serpico
  • P. Sigalotti
  • S. Spampinati
  • C. Spezzani
  • M. Svandrlik
  • C. Svetina
  • S. Tazzari
  • M. Trovo
  • R. Umer
  • A. Vascotto
  • M. Veronese
  • R. Visintini
  • M. Zaccaria
  • D. Zangrando
  • M. Zangrando
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Summary, in English

Free-electron lasers (FELs) are promising devices for generating light with laser-like properties in the extreme ultraviolet and X-ray spectral regions. Recently, FELs based on the self-amplified spontaneous emission (SASE) mechanism have allowed major breakthroughs in diffraction and spectroscopy applications, despite the relatively large shot-to-shot intensity and photon-energy fluctuations and the limited longitudinal coherence inherent in the SASE mechanism. Here, we report results on the initial performance of the FERMI seeded FEL, based on the high-gain harmonic generation configuration, in which an external laser is used to initiate the emission process. Emission from the FERMI FEL-1 source occurs in the form of pulses carrying energy of several tens of microjoules per pulse and tunable throughout the 65 to 20 nm wavelength range, with unprecedented shot-to-shot wavelength stability, low-intensity fluctuations, close to transform-limited bandwidth, transverse and longitudinal coherence and full control of polarization.

Department/s

Publishing year

2012

Language

English

Pages

699-704

Publication/Series

Nature Photonics

Volume

6

Issue

10

Document type

Journal article

Publisher

Nature Publishing Group

Topic

  • Natural Sciences
  • Physical Sciences

Status

Published

ISBN/ISSN/Other

  • ISSN: 1749-4885