Determination of the inertial contribution to the nonlinear refractive index of air, N2, and O2 by use of unfocused high-intensity femtosecond laser pulses - École polytechnique Access content directly
Journal Articles Journal of the Optical Society of America B Year : 1997

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.
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hal-00465603 , version 1 (19-03-2010)

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Erik T. Nibbering, G. Grillon, Michel A. Franco, Bernard Prade, André Mysyrowicz. Determination of the inertial contribution to the nonlinear refractive index of air, N2, and O2 by use of unfocused high-intensity femtosecond laser pulses. Journal of the Optical Society of America B, 1997, 14 (3), pp.650-660. ⟨10.1364/JOSAB.14.000650⟩. ⟨hal-00465603⟩
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