Double-pulse excitation of x-ray capillary lasers

Sergei V. Kukhlevsky, Ida Z. Kozma, Libero Palladino, Armando Reale, Francesco Flora, Luca Mezi, Gualtiero Giordano

Research output: Contribution to journalConference article

8 Citations (Scopus)


We propose to enhance the gain of Ne-like ion capillary lasers by the utilization of two discharge pulses. A first pulse working in the pinch regime mode is designed to create the cold-plasma column with the required ionization degree, followed by a second fast high-voltage pulse to do the effective collision excitation. The second pulse, which heats the electrons to a kinetic temperature Te > Tecold in times shorter than the ionization time, increases the laser gain. In the two stage pumping scheme, both the amplitude of each of the pulses and the delay between them can be adjusted for independent control of the ionization degree and excitation rate. Numerical estimations performed for the low-Z-ion (Na+1,.., Ar+8) lasers with the double pulse pumping predict enhancement in gain by a factor of approximately 10. In addition, the extension of two-stage electrical pumping to the high-Z-ion collision and recombination laser schemes is discussed. Description of the experimental set-up constructed for such experiments and some related measurement data are also presented.

Original languageEnglish
Pages (from-to)180-186
Number of pages7
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - Dec 1 1997
EventSoft X-Ray Lasers and Applications II - San Diego, CA, United States
Duration: Jul 28 1997Jul 28 1997



  • Collision and recombination excitation
  • Dynamical z-pinches
  • Soft-x-ray capillary lasers

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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