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A review of X-ray laser development at Rutherford Appleton Laboratory

  • G.J. TALLENTS (a1), Y. ABOU-ALI (a1), M. EDWARDS (a1), R. KING (a1), G.J. PERT (a1), S.J. PESTEHE (a1), F. STRATI (a1), C.L.S. LEWIS (a2), R. KEENAN (a2), S. TOPPING (a2), A. KLISNICK (a3), O. GUILBAUD (a3), D. ROS (a3), R. CLARKE (a4), M. NOTLEY (a4) and D. NEELY (a4)...
Abstract

Recent experiments undertaken at the Rutherford Appleton Laboratory to produce X-ray lasing over the 5–30 nm wavelength range are reviewed. The efficiency of lasing is optimized when the main pumping pulse interacts with a preformed plasma. Experiments using double 75-ps pulses and picosecond pulses superimposed on 300-ps background pulses are described. The use of travelling wave pumping with the approximately picosecond pulse experiments is necessary as the gain duration becomes comparable to the time for the X-ray laser pulse to propagate along the target length. Results from a model taking account of laser saturation and deviations from the speed of light c of the travelling wave and X-ray laser group velocity are presented. We show that X-ray laser pulses as short as 2–3 ps can be produced with optical pumping pulses of ≈1-ps.

Copyright
Corresponding author
Address correspondence and reprint requests to: G.J. Tallents, Department of Physics, University of York, York YO10 5DD, United Kingdom. E-mail: gjt5@york.ac.uk
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Laser and Particle Beams
  • ISSN: 0263-0346
  • EISSN: 1469-803X
  • URL: /core/journals/laser-and-particle-beams
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