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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 18, Iss. 12 — Dec. 1, 2001
  • pp: 1877–1881

Control of high harmonic and attosecond pulse generation in aperiodic modulated waveguides

Ivan P. Christov  »View Author Affiliations

JOSA B, Vol. 18, Issue 12, pp. 1877-1881 (2001)

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A technique for enhanced generation of high harmonics and attosecond pulses in a gas medium, in a high ionization limit, is described theoretically. An aperiodic corrugated hollow-core waveguide modulates the intensity of the fundamental pulse along the direction of propagation, resulting in quasi-phase-matched harmonic emission at wavelengths close to the cutoff of the spectrum. For a few-cycle laser pulse, linearly chirped corrugation leads to a significant increase of the harmonic yield of a broad frequency band that corresponds to an ∼200-attosecond x-ray pulse. For longer driving pulses, appropriate corrugation permits flexible coherent control of the quasi-phase-matched emission of selected harmonics.

© 2001 Optical Society of America

OCIS Codes
(190.0190) Nonlinear optics : Nonlinear optics
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(340.0340) X-ray optics : X-ray optics

Ivan P. Christov, "Control of high harmonic and attosecond pulse generation in aperiodic modulated waveguides," J. Opt. Soc. Am. B 18, 1877-1881 (2001)

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