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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 2 — Jan. 16, 2012
  • pp: 1662–1667

Third and fifth harmonic generation by tightly focused femtosecond pulses at 2.2 μm wavelength in air

Gombojav O. Ariunbold, Pavel Polynkin, and Jerome V. Moloney  »View Author Affiliations

Optics Express, Vol. 20, Issue 2, pp. 1662-1667 (2012)

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We report experiments on the generation of third and fifth harmonics of millijoule-level, tightly focused, femtosecond laser pulses at 2.2 μm wavelength in air. The measured ratio of yields of the third and fifth harmonics in our setup is found equal to 2 · 10−4. This result contradicts the recent suggestion that the Kerr effect in air saturates and changes sign in ultra-intense optical fields.

© 2012 OSA

OCIS Codes
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.3270) Nonlinear optics : Kerr effect
(320.7110) Ultrafast optics : Ultrafast nonlinear optics

ToC Category:
Nonlinear Optics

Original Manuscript: October 12, 2011
Revised Manuscript: November 30, 2011
Manuscript Accepted: November 30, 2011
Published: January 11, 2012

Gombojav O. Ariunbold, Pavel Polynkin, and Jerome V. Moloney, "Third and fifth harmonic generation by tightly focused femtosecond pulses at 2.2 μm wavelength in air," Opt. Express 20, 1662-1667 (2012)

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