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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 21 — Oct. 17, 2007
  • pp: 13942–13948

Generation of hard X-rays using an ultrafast fiber laser system

Kai-Hsiu Liao, Aghapi G. Mordovanakis, Bixue Hou, Guoqing Chang, Matthew Rever, Gerard Mourou, John Nees, and Almantas Galvanauskas  »View Author Affiliations

Optics Express, Vol. 15, Issue 21, pp. 13942-13948 (2007)

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We report the first hard X-ray source driven by a femtosecond fiber laser. The high energy fiber CPA system incorporated a 65μm LMA fiber amplifying stage which provided 300-fs recompressed pulses and diffraction limited beam quality with M2 < 1.07. A deformable mirror was used to optimize the wavefront and the spot size was focused down to 2.3 μm with an f/1.2 paraboloidal mirror. 50μJ was deposited on the nickel target with 2×1015-W/cm2 focal intensity and a distinctive Ni Kα -line (7.48 keV) emission was measured with 5×10-8 energy conversion efficiency.

© 2007 Optical Society of America

OCIS Codes
(140.3510) Lasers and laser optics : Lasers, fiber
(140.7090) Lasers and laser optics : Ultrafast lasers
(140.7240) Lasers and laser optics : UV, EUV, and X-ray lasers

ToC Category:
Lasers and Laser Optics

Original Manuscript: August 13, 2007
Revised Manuscript: September 13, 2007
Manuscript Accepted: September 22, 2007
Published: October 9, 2007

Kai-Hsiu Liao, Aghapi G. Mordovanakis, Bixue Hou, Guoqing Chang, Matthew Rever, Gerard A. Mourou, John Nees, and Almantas Galvanauskas, "Generation of hard X-rays using an ultrafast fiber laser system," Opt. Express 15, 13942-13948 (2007)

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