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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 5 — Mar. 2, 2009
  • pp: 3190–3195

Efficient third-harmonic generation through tailored IR femtosecond laser pulse filamentation in air

S. Suntsov, D. Abdollahpour, D. G. Papazoglou, and S. Tzortzakis  »View Author Affiliations


Optics Express, Vol. 17, Issue 5, pp. 3190-3195 (2009)
http://dx.doi.org/10.1364/OE.17.003190


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Abstract

The process of third-harmonic generation during the filamentation of intense IR femtosecond laser pulses in air is investigated experimentally. It is shown that the introduction of a thin plasma string created by another femtosecond pulse, perpendicularly to the filament’s path, dramatically reshapes the third-harmonic beam into a Bessel-like far-field distribution, while at the same time significantly enhances, up to 250 times, its conversion efficiency.

© 2009 Optical Society of America

OCIS Codes
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.5940) Nonlinear optics : Self-action effects
(320.2250) Ultrafast optics : Femtosecond phenomena
(320.7110) Ultrafast optics : Ultrafast nonlinear optics

ToC Category:
Nonlinear Optics

History
Original Manuscript: November 30, 2008
Revised Manuscript: January 16, 2009
Manuscript Accepted: January 16, 2009
Published: February 17, 2009

Citation
S. Suntsov, D. Abdollahpour, D. G. Papazoglou, and S. Tzortzakis, "Efficient third-harmonic generation through tailored IR femtosecond laser pulse filamentation in air," Opt. Express 17, 3190-3195 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-5-3190


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