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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 26 — Dec. 24, 2007
  • pp: 17985–17990

Multiple quasi-phase-matching for enhanced generation of selected high harmonics in aperiodic modulated fibers

Li Zheng, Xianfeng Chen, Songsong Tang, and Ruxin Li  »View Author Affiliations

Optics Express, Vol. 15, Issue 26, pp. 17985-17990 (2007)

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A technique for enhanced generation of selected high harmonics in a gas medium, in a high ionization limit, is proposed in this paper. An aperiodically corrugated hollow-core fiber is employed to modulate the intensity of the fundamental laser pulse along the direction of propagation, resulting in multiple quasi-phase-matched high harmonic emissions at the cutoff region. Simulated annealing (SA) algorithm is applied for optimizing the aperiodic hollow-core fiber. Our simulation shows that the yield of selected harmonics is increased equally by up to 2 orders of magnitude compared with no modulation and this permits flexible control of the quasi-phase-matched emission of selected harmonics by appropriate corrugation.

© 2007 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:
Nonlinear Optics

Original Manuscript: August 30, 2007
Revised Manuscript: November 15, 2007
Manuscript Accepted: November 30, 2007
Published: December 18, 2007

Li Zheng, Xianfeng Chen, Songsong Tang, and Ruxin Li, "Multiple quasi-phase-matching for enhanced generation of selected high harmonics in aperiodic modulated fibers," Opt. Express 15, 17985-17990 (2007)

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