Studies of high Z exploding foils irradiated by combined long (2 ns) and short (10 ps) pulses of 1ω light

L. B. Da Silva, B. J. MacGowan, Dennis L Matthews, M. D. Rosen, H. A. Baldis, G. D. Enright, B. LaFontaine, D. M. Villeneuve

Research output: Chapter in Book/Report/Conference proceedingConference contribution

21 Scopus citations

Abstract

High Z exploding foil targets are used in many soft X-ray laser schemes. The foils are typically irradiated with a long (Approximately 1 ns) optical laser pulse that burns through the foil to produce a large hot plasma with long density scale lengths suitable as an amplifier. While it is expanding, and before the plasma conditions are suitable for stimulated emission, a large fraction of the heating laser energy is lost through radiation and conduction. We report the results of experiments attempting to increase the efficiency of exploding foil amplifiers through the following procedure. A laser beam (Approximately 1012 W/cm2) is used to heat the foil sufficiently to expand it to approximately 200 μm. A high intensity (Approximately 1015 W/cm2) short pulse (10 ps) laser beam is then used to raise the plasma to the desired temperature and ion state. Temporally resolved X-ray spectra from Yb foils are presented.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsE.M. Campbell
Place of PublicationBellingham, WA, United States
PublisherPubl by Int Soc for Optical Engineering
Pages128-137
Number of pages10
Volume1229
ISBN (Print)0819402702
StatePublished - 1990
Externally publishedYes
EventFemtosecond to Nanosecond High-Intensity Lasers and Applications - Los Angeles, CA, USA
Duration: Jan 17 1990Jan 18 1990

Other

OtherFemtosecond to Nanosecond High-Intensity Lasers and Applications
CityLos Angeles, CA, USA
Period1/17/901/18/90

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

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