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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 34, Iss. 5 — Mar. 1, 2009
  • pp: 635–637

Observation of a plasma waveguide in a preformed plasma pumped by double-pulse laser irradiation for the efficient soft x-ray amplification

Tetsuya Kawachi, Noboru Hasegawa, Masaharu Nishikino, Yoshihiro Ochi, and Akira Sasaki  »View Author Affiliations


Optics Letters, Vol. 34, Issue 5, pp. 635-637 (2009)
http://dx.doi.org/10.1364/OL.34.000635


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Abstract

A molybdenum slab target was irradiated by double pulses of a line-focused chirped-pulse-amplification Nd:glass laser. A probe beam was injected in the plasma in the longitudinal direction, and we found that the probe beam was guided in the plasma with the plasma length of up to 4.3 mm at the time of 0.8 1.5 ns after the peak of the second pulse. Comparison with hydrodynamics code implied that the electron-density dip or flat region was formed, which was favorable for the efficient soft x-ray lasing under the coupling of the seed x-ray and the x-ray amplifier.

© 2009 Optical Society of America

OCIS Codes
(140.7240) Lasers and laser optics : UV, EUV, and X-ray lasers
(320.5390) Ultrafast optics : Picosecond phenomena
(340.7480) X-ray optics : X-rays, soft x-rays, extreme ultraviolet (EUV)
(350.5400) Other areas of optics : Plasmas

ToC Category:
X-ray Optics

History
Original Manuscript: September 12, 2008
Revised Manuscript: December 11, 2008
Manuscript Accepted: January 4, 2009
Published: February 24, 2009

Citation
Tetsuya Kawachi, Noboru Hasegawa, Masaharu Nishikino, Yoshihiro Ochi, and Akira Sasaki, "Observation of a plasma waveguide in a preformed plasma pumped by double-pulse laser irradiation for the efficient soft x-ray amplification," Opt. Lett. 34, 635-637 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-5-635


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