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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 8 — Apr. 16, 2007
  • pp: 4857–4862

Third harmonic generation in self-focused filaments in liquids

Guilin Mao, Yeheng Wu, and Kenneth D. Singer  »View Author Affiliations


Optics Express, Vol. 15, Issue 8, pp. 4857-4862 (2007)
http://dx.doi.org/10.1364/OE.15.004857


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Abstract

Intense filaments of third harmonic generation have been observed in a variety of liquids when pumped by 1300 nm wavelength femtosecond light. The onset of third harmonic generation coincides with the threshold for self-focusing as deduced from n2 measurements performed on the liquids using the z-scan technique. We have found self-phase modulation above the threshold leading to continuum generation at about 3 times threshold. In the third-harmonic regime, the third harmonic output power is independent of the input power. Our observations are consistent with those for similar processes in gases as described by a phase-locking model. The measured conversion efficiency was approximately 10-6.

© 2007 Optical Society of America

OCIS Codes
(190.0190) Nonlinear optics : Nonlinear optics
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.5940) Nonlinear optics : Self-action effects

ToC Category:
Nonlinear Optics

History
Original Manuscript: March 1, 2007
Revised Manuscript: April 4, 2007
Manuscript Accepted: April 4, 2007
Published: April 6, 2007

Citation
Guilin Mao, Yeheng Wu, and Kenneth D. Singer, "Third harmonic generation in self-focused filaments in liquids," Opt. Express 15, 4857-4862 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-8-4857


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