Solvated electron at the light of femtosecond laser interaction

P. Palyanov; F. Quere; Ph. Martin; S. Pommeret

doi:10.1117/12.675569

3 February 2006 Solvated electron at the light of femtosecond laser interaction

P. Palyanov, F. Quere, Ph. Martin, S. Pommeret

Proceedings Volume 5975, Topical Problems of Nonlinear Wave Physics; 59750P (2006) https://doi.org/10.1117/12.675569
Event: Topical Problems of Nonlinear Wave Physics, 2005, St. Petersburg, Russian Federation

Abstract

We report the experimental study of the ultra-fast modification of the dielectric function of pure water by an intense femtosecond laser pulse. Using a time-resolved optical interferometric technique, we measured the variation of the phase shift, which is proportional to the modification of the real part of the refractive index, as well as the variation of the fringes contrast, proportional to the modification of the absorption coefficient. We first observe a positive phase shift due to Kerr effect and immediately followed a negative one. After 200 fs, the phase shift becomes positive and remains so for at least 3 ps. Using the simple Drude - Lorentz model, we interpret this evolution as the result of electron self-trapping.

Citation Download Citation

P. Palyanov, F. Quere, Ph. Martin, and S. Pommeret "Solvated electron at the light of femtosecond laser interaction", Proc. SPIE 5975, Topical Problems of Nonlinear Wave Physics, 59750P (3 February 2006); https://doi.org/10.1117/12.675569

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