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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 16 — Aug. 3, 2009
  • pp: 13429–13434

Measurement of high order Kerr refractive index of major air components

V. Loriot, E. Hertz, O. Faucher, and B. Lavorel  »View Author Affiliations

Optics Express, Vol. 17, Issue 16, pp. 13429-13434 (2009)

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We measure the instantaneous electronic nonlinear refractive index of N2, O2, and Ar at room temperature for a 90 fs and 800 nm laser pulse. Measurements are calibrated by post-pulse molecular alignment through a polarization technique. At low intensity, quadratic coefficients n2 are determined. At higher intensities, a strong negative contribution with a higher nonlinearity appears, which leads to an overall negative nonlinear Kerr refractive index in air above 26 TW/cm2.

© 2009 Optical Society of America

OCIS Codes
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(260.5950) Physical optics : Self-focusing
(320.2250) Ultrafast optics : Femtosecond phenomena
(350.5400) Other areas of optics : Plasmas

ToC Category:
Nonlinear Optics

Original Manuscript: April 29, 2009
Revised Manuscript: June 15, 2009
Manuscript Accepted: June 15, 2009
Published: July 21, 2009

Vincent Loriot, Edouard Hertz, Olivier Faucher, and Bruno Lavorel, "Measurement of high order Kerr refractive index of major air components," Opt. Express 17, 13429-13434 (2009)

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