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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 20, Iss. 1 — Jan. 1, 2003
  • pp: 166–170

High-order harmonic generation in crossed laser beams

J. B. Madsen, L. A. Hancock, S. L. Voronov, and J. Peatross  »View Author Affiliations


JOSA B, Vol. 20, Issue 1, pp. 166-170 (2003)
http://dx.doi.org/10.1364/JOSAB.20.000166


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Abstract

We investigate laser high-order harmonic generation in the presence of interfering light. A relatively weak interfering pulse intersects the primary harmonic-generating laser pulse at the focus. The influence on the harmonic-generation process is studied at near-counterpropagating and at perpendicular angles. The interfering beam creates a standing intensity and phase modulation, which disrupts microscopic phase matching and shuts down local high-harmonic production. Simple quasi-phase matching is demonstrated in which the interfering light disrupts harmonic generation in a portion of the laser focus. Under poor phase-matching conditions, perpendicularly propagating light is shown to enhance the 23rd harmonic generated in argon.

© 2003 Optical Society of America

OCIS Codes
(190.4160) Nonlinear optics : Multiharmonic generation
(190.7220) Nonlinear optics : Upconversion
(320.7110) Ultrafast optics : Ultrafast nonlinear optics
(320.7160) Ultrafast optics : Ultrafast technology

Citation
J. B. Madsen, L. A. Hancock, S. L. Voronov, and J. Peatross, "High-order harmonic generation in crossed laser beams," J. Opt. Soc. Am. B 20, 166-170 (2003)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-20-1-166

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