Applied Physics B

, Volume 94, Issue 4, pp 569–575

Kα x-ray emission characterization of 100 Hz, 15 mJ femtosecond laser system with high contrast ratio

  • S. Fourmaux
  • C. Serbanescu
  • R. E. KincaidJr.
  • A. Krol
  • J. C. Kieffer
Article

DOI: 10.1007/s00340-008-3342-6

Cite this article as:
Fourmaux, S., Serbanescu, C., Kincaid, R.E. et al. Appl. Phys. B (2009) 94: 569. doi:10.1007/s00340-008-3342-6

Abstract

We report Kα x-ray production with a high energy (110 mJ per pulse at 800 nm before compression/15 mJ at 400 nm after compression), high repetition rate (100 Hz), and high pulse contrast (better than 10−9 at 400 nm) laser system. To develop laser-based x-ray sources for biomedical imaging requires to use high-energy and high-power ultrafast laser system where compression is achieved under vacuum. Using this type of laser system, we demonstrate long-term stability of the x-ray yield, conversion efficiency higher than 1.5×10−5 with a Mo target, and the x-ray spot size close to the optical focal spot. This high-repetition Kα x-ray source can be very useful for x-ray phase-contrast imaging.

PACS

52.38.Ph52.59Px52.50Jm

Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  • S. Fourmaux
    • 1
  • C. Serbanescu
    • 1
  • R. E. KincaidJr.
    • 2
  • A. Krol
    • 3
  • J. C. Kieffer
    • 1
  1. 1.INRS-EMTUniversité du QuébecVarennesCanada
  2. 2.Syracuse UniversitySyracuseUSA
  3. 3.SUNY Upstate Medical UniversitySyracuseUSA