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Optics Express

Optics Express

  • Editor: J. H. Eberly
  • Vol. 7, Iss. 11 — Nov. 20, 2000
  • pp: 362–367

Quasi-phase matching of high-harmonics and attosecond pulses in modulated waveguides

Ivan P. Christov, Henry C. Kapteyn, and Margaret M. Murnane  »View Author Affiliations

Optics Express, Vol. 7, Issue 11, pp. 362-367 (2000)

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We describe theoretically a new technique for quasi-phase-matched generation of high harmonics and attosecond pulses in a gas medium, in a high ionization limit. A corrugated hollow-core fiber modulates the intensity of the fundamental pulse along the direction of propagation, resulting in a periodic modulation of the harmonic emission at wavelengths close to the cutoff. This leads to an increase of the harmonic yield of up to three orders of magnitude. At the same time the highest harmonics merge in a broad band that corresponds to a single attosecond pulse, using 15-fs driving pulses.

© Optical Society of America

OCIS Codes
(190.4160) Nonlinear optics : Multiharmonic generation
(340.7480) X-ray optics : X-rays, soft x-rays, extreme ultraviolet (EUV)

ToC Category:
Research Papers

Original Manuscript: October 16, 2000
Published: November 20, 2000

Ivan Christov, Henry Kapteyn, and Margaret Murnane, "Quasi-phase matching of high-harmonics and attosecond pulses in modulated waveguides," Opt. Express 7, 362-367 (2000)

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