Ecole Polytechnique

Thales

Centre National De La Recherche Scientifique

Ecole Nationale Superieure Des Techniques Avancees

Gilles Cheriaux

Gérard Mourou

Franck Falcoz

Solomon Saltiel

Christophe Radier

Jean Etchepare

Olivier Albert

Aurélie Jullien

Nikolay Minkovski

An embodiment relates to a device for generating a short duration laser pulse, which comprises: means for generating a laser beam and for filtering same, arranged in such a way as to generate an input laser beam providing an input laser pulse; a transparent slide comprising a non-linear scattering material; the laser generation means being arranged so that the slide widens the spectrum of the input laser pulse by phase self-modulation in order to generate a wide-spectrum laser pulse; compression means adapted for compressing the wide-spectrum laser pulse in order to generate a short duration laser pulse; wherein the laser generation means are arranged so that the input beam is spatially uniform on the transparent slide and has a break integral B lower than three when the input beam passes through the transparent slide.

Device for generating a short duration laser pulse

A frequency-drift amplification device for a pulsed laser, including: a stretcher for time-stretching an incident laser pulse; at least one amplifying medium for amplifying the laser pulse; a main compressor for time-compressing the laser pulse to a desired duration for an output pulse of the amplification device; and at least one adjustment compressor between the stretcher and the main compressor, and in which the laser pulse undergoes four diffractions on diffraction gratings to time-compress the stretched laser pulse to a duration that is greater than the desired duration for the output pulse of the amplification device.

Frequency-drift amplification device for a pulsed laser

The present invention relates to a method of amplification based on spatio-temporal frequency drift for a pulse laser comprising a so-called CPA (Chirped Pulse Amplification) frequency-shift amplifying chain, the various spectral components spatially spread. The various components separately amplified.

Method for amplification by spatio-temporal frequency conversion and device for carrying out said method

The invention relates to a non-linear optical filter capable of transmitting an electromagnetic pulse with a duration of less than about 1 picosecond, provided with means for generating an electromagnetic field E with a linear polarization from this pulse, and with a crystal Cof cubic geometry capable of generating an electromagnetic field E'from E with a linear polarization orthogonal to that of E. It comprises means for generating at least one other electromagnetic field E&#x2032;capable of producing constructive interferences with the electromagnetic field E&#x2032;.

Non-linear femtosecond pulse filter with high contrast

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Fresnes, France

Gilles Cheriaux