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Single-shot spectral interferometry of femtosecond laser-produced plasmas

Published online by Cambridge University Press:  30 July 2001

S. REBIBO ,
J.-P. GEINDRE ,
P. AUDEBERT ,
G. GRILLON ,
J.-P. CHAMBARET  and
J.-C. GAUTHIER
S. REBIBO
Affiliation:
Laboratoire pour l'Utilisation des Lasers Intenses, UMR 7605 CNRS—Ecole polytechnique—CEA—Université Paris VI, Ecole polytechnique, 91128 Palaiseau, France
J.-P. GEINDRE
Affiliation:
Laboratoire pour l'Utilisation des Lasers Intenses, UMR 7605 CNRS—Ecole polytechnique—CEA—Université Paris VI, Ecole polytechnique, 91128 Palaiseau, France
P. AUDEBERT
Affiliation:
Laboratoire pour l'Utilisation des Lasers Intenses, UMR 7605 CNRS—Ecole polytechnique—CEA—Université Paris VI, Ecole polytechnique, 91128 Palaiseau, France
G. GRILLON
Affiliation:
Laboratoire d'Optique Appliquée, UMR 7639 CNRS—ENSTA—Ecole polytechnique, Batterie de l'Yvette, 91761 Palaiseau, France
J.-P. CHAMBARET
Affiliation:
Laboratoire d'Optique Appliquée, UMR 7639 CNRS—ENSTA—Ecole polytechnique, Batterie de l'Yvette, 91761 Palaiseau, France
J.-C. GAUTHIER
Affiliation:
Laboratoire pour l'Utilisation des Lasers Intenses, UMR 7605 CNRS—Ecole polytechnique—CEA—Université Paris VI, Ecole polytechnique, 91128 Palaiseau, France
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Abstract

We use both a Fourier-transform-based analysis and time-retrieval calculations to get time-resolved measurements of the reflectivity and the phase shift of a chirped probe pulse interacting with a fs-laser-produced plasma by spectral interferometry in a single shot. We have devised a novel dual-quadrature Mach–Zehnder configuration in which wavefront division is used to obtain spatial fringes from the perturbed and unperturbed probe simultaneously. We demonstrate the capability of this technique with fully analyzed experimental data on the interaction of a femtosecond laser with C3H6 and C samples, showing 35-fs time resolution.

Type
Research Article
Information
Laser and Particle Beams , Volume 19 , Issue 1 , January 2001 , pp. 67 - 73
Copyright
© 2001 Cambridge University Press

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