Ecole Polytechnique

Centre National De La Recherche Scientifique

Ecole Nationale Superieure De Techniques Avancees

Silios Technologies

Jean-Paul Chambaret

Victor Malka

Stéphane Tisserand

Fabien Reversat

Federico Canova

Jérôme Faure

Denis Douillet

Jean Philippe Rousseau

Frédéric Burgy

Gilles Chériaux

Brigitte Mercier

Jean-Philippe Rousseau

Thierry Lefrou

Danièle Hulin

Frédérika Augé-Rochereau

A system for homogenizing a laser pulse emitted by a laser source in order to illuminate a target homogeneously, the system having, between the laser source and the target: a phase plate constituted by a plurality of subpupils capable of generating a plurality of delayed laser beams towards the target, the path difference &#x394;d between two adjacent delayed laser beams being greater than or equal to the length of the temporal coherence Tof the laser pulse, and focusing device; wherein the subpupils and the focusing device are adjusted so that the delayed laser beams are superimposed on the target in a homogeneous spot.

Homogenizer including a phase plate

A device for generating a high-energy particle pulse is provided which comprises a laser system producing laser pulses with pulse length shorter than 100 fs (femtoseconds), and capable to be focused to peak intensities greater than 10A18 W/cmA2, preferred greater than 10A20 W/cmA2 (watts per centimeter squared), a device for shaping the temporal intensity profile accompanying said at least one laser pulse for increasing the laser contrast above 10^5, preferably above IL 0A7, especially 1OA10, and a target capable of releasing a high-energy particle pulse, particularly an electron or a proton pulse, upon irradiation with at least one of said laser pulses. A. corresponding method using the device is also described.

Device and method for high-energy particle pulse generation

Growing community of inventors

Chatillon, France

Jean-Paul Chambaret