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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 45, Iss. 4 — Feb. 1, 2006
  • pp: 748–755

Third-harmonic generation in air by use of femtosecond radiation in tight-focusing conditions

Rashid A. Ganeev, Masayuki Suzuki, Motoyoshi Baba, Hiroto Kuroda, and Ilia A. Kulagin  »View Author Affiliations


Applied Optics, Vol. 45, Issue 4, pp. 748-755 (2006)
http://dx.doi.org/10.1364/AO.45.000748


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Abstract

Third-harmonic generation (THG) in air in tight-focusing conditions is presented. Variation of the pulse duration supplied optimal conditions for THG by femtosecond pulses that varied in the range 110 1300   fs . We show that this third-harmonic generation was caused by Kerr-induced phase variations of fundamental and harmonic beams. Various characteristics (laser intensity, focusing conditions, pulse duration, air pressure, etc.) of THG in air were analyzed to optimize this process. The THG conversion efficiency of 795   nm , 300   fs radiation was 1 × 10 3 . The harmonic radiation did not show considerable disruption of its spectral and spatial distribution in tight focusing conditions for intensities as high as 5 × 10 14 W   cm 2 .

© 2006 Optical Society of America

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

ToC Category:
Nonlinear Optics

History
Original Manuscript: January 28, 2005
Manuscript Accepted: May 31, 2005

Citation
Rashid A. Ganeev, Masayuki Suzuki, Motoyoshi Baba, Hiroto Kuroda, and Ilia A. Kulagin, "Third-harmonic generation in air by use of femtosecond radiation in tight-focusing conditions," Appl. Opt. 45, 748-755 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-4-748

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