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Journal articles
Determination of the inertial contribution to the nonlinear refractive index of air, N2, and O2 by use of unfocused high-intensity femtosecond laser pulses
Abstract : We analyze the spectral changes that occur when unfocused intense femtosecond pulses at 800 nm propagate through different atomic and molecular gases. The observed red shift in the self-phase-modulated spectra after propagation through N2, O2, and air is attributed to a delayed change of the nonlinear refractive index, a consequence of the molecular response to impulsive excitation of rotational coherences. We compare these results on the nonlinear refractive index with those obtained from Ar, Xe, and SF6.
Keywords :
nonlinear optics
kerr effect
https://hal-polytechnique.archives-ouvertes.fr/hal-00465603
Contributor : Aurélien Houard <>
Submitted on : Friday, March 19, 2010 - 11:46:15 PM
Last modification on : Friday, April 23, 2021 - 4:18:05 PM
Contributor : Aurélien Houard <>
Submitted on : Friday, March 19, 2010 - 11:46:15 PM
Last modification on : Friday, April 23, 2021 - 4:18:05 PM