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, C. L. Arnold

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Abstract

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.

Original languageEnglish
Pages (from-to)2218-2221
Number of pages4
JournalOptics Letters
Volume39
Issue number7
DOIs
Publication statusPublished - Apr 1 2014

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Kroon, D., Guénot, D., Kotur, M., Balogh, E., Larsen, E. W., Heyl, C. M., Miranda, M., Gisselbrecht, M., Mauritsson, J., Johnsson, P., Varjú, K., L'Huillier, A., & Arnold, C. L. (2014). Attosecond pulse walk-off in high-order harmonic generation. Optics Letters, 39(7), 2218-2221. https://doi.org/10.1364/OL.39.002218