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Measurement of high order Kerr refractive index of major air components

Abstract : 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 .
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https://hal.archives-ouvertes.fr/hal-00410677
Contributor : O. Faucher <>
Submitted on : Sunday, August 23, 2009 - 8:37:20 PM
Last modification on : Saturday, December 7, 2019 - 3:52:07 PM
Document(s) archivé(s) le : Tuesday, June 15, 2010 - 10:42:19 PM

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  • HAL Id : hal-00410677, version 1

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V. Loriot, E. Hertz, O. Faucher, B. Lavorel. Measurement of high order Kerr refractive index of major air components. Optics Express, Optical Society of America, 2009, 17 (16), pp.13429. ⟨hal-00410677⟩

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