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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 33, Iss. 22 — Nov. 15, 2008
  • pp: 2593–2595

Femtosecond filamentation and pulse compression in the wake of molecular alignment

Jian Wu, Hua Cai, Heping Zeng, and Arnaud Couairon  »View Author Affiliations

Optics Letters, Vol. 33, Issue 22, pp. 2593-2595 (2008)

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We numerically demonstrate that femtosecond filamentation in a molecular gas can be controlled in the wake of molecular alignment following impulsive rotational Raman excitation with a weak pump pulse. The succeeding filamentation dynamics of the collinearly propagating probe pulse is significantly influenced by the spatiotemporally modulated refractive index at the revivals of molecular alignment. The length of the filament generated by the probe pulse can be efficiently increased to obtain an ultrabroad spectrum and a few-cycle pulse via self-compression by tuning its delay to match the molecular alignment revivals.

© 2008 Optical Society of America

OCIS Codes
(260.5950) Physical optics : Self-focusing
(320.7110) Ultrafast optics : Ultrafast nonlinear optics
(020.2649) Atomic and molecular physics : Strong field laser physics

ToC Category:
Ultrafast Optics

Original Manuscript: September 8, 2008
Manuscript Accepted: September 26, 2008
Published: November 7, 2008

Jian Wu, Hua Cai, Heping Zeng, and Arnaud Couairon, "Femtosecond filamentation and pulse compression in the wake of molecular alignment," Opt. Lett. 33, 2593-2595 (2008)

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