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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 7 — Apr. 1, 2014
  • pp: 2218–2221

Attosecond pulse walk-off in high-order harmonic generation

D. Kroon, D. Guénot, M. Kotur, E. Balogh, E. W. Larsen, C. M. Heyl, M. Miranda, M. Gisselbrecht, J. Mauritsson, P. Johnsson, K. Varjú, A. L’Huillier, and C. L. Arnold  »View Author Affiliations

Optics Letters, Vol. 39, Issue 7, pp. 2218-2221 (2014)

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We study the influence of the generation conditions on the group delay of attosecond pulses in high-order harmonic generation in gases. The group delay relative to the fundamental field is found to decrease with increasing gas pressure in the generation cell, reflecting a temporal walk-off due to the dispersive properties of the nonlinear medium. This effect is well reproduced using an on-axis phase-matching model of high-order harmonic generation in an absorbing gas.

© 2014 Optical Society of America

OCIS Codes
(020.4180) Atomic and molecular physics : Multiphoton processes
(320.7110) Ultrafast optics : Ultrafast nonlinear optics
(020.2649) Atomic and molecular physics : Strong field laser physics

ToC Category:
Atomic and Molecular Physics

Original Manuscript: January 8, 2014
Revised Manuscript: March 5, 2014
Manuscript Accepted: March 6, 2014
Published: March 31, 2014

D. Kroon, D. Guénot, M. Kotur, E. Balogh, E. W. Larsen, C. M. Heyl, M. Miranda, M. Gisselbrecht, J. Mauritsson, P. Johnsson, K. Varjú, A. L’Huillier, and C. L. Arnold, "Attosecond pulse walk-off in high-order harmonic generation," Opt. Lett. 39, 2218-2221 (2014)

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