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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: Henry Van Driel
  • Vol. 26, Iss. 4 — Apr. 1, 2009
  • pp: 645–649

Background-free third-order harmonic generation induced by dynamic gratings in dual filaments

Hong Wu, Tiejun Yang, Yanling Wang, and Liang’en Ding  »View Author Affiliations

JOSA B, Vol. 26, Issue 4, pp. 645-649 (2009)

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Background-free third-order harmonic generation is observed from dynamic gratings induced by dual laser filaments in argon gas. The filaments were generated by focusing two intense 60 fs laser pulses noncollinearly into a gas cell. The optimal result is achieved with gas pressure of 2 atm and zero relative delay. It seems that the off-axis third-harmonic generation is mainly due to the interaction between the two interfering fundamental pulses and their filaments.

© 2009 Optical Society of America

OCIS Codes
(140.7090) Lasers and laser optics : Ultrafast lasers
(190.0190) Nonlinear optics : Nonlinear optics
(190.4160) Nonlinear optics : Multiharmonic generation
(320.2250) Ultrafast optics : Femtosecond phenomena

ToC Category:
Lasers and Laser Optics

Original Manuscript: November 5, 2008
Revised Manuscript: February 2, 2009
Manuscript Accepted: February 5, 2009
Published: March 10, 2009

Hong Wu, Tiejun Yang, Yanling Wang, and Liang'en Ding, "Background-free third-order harmonic generation induced by dynamic gratings in dual filaments," J. Opt. Soc. Am. B 26, 645-649 (2009)

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