Astrium Sas

Arianegroup Sas

Compagnie Industrielle Des Lasers Cilas

Airbus Defence and Space Sas

Compagnie Industrielle Des Laser Cilas

Airbus Safran Launchers Sas

Bruno Esmiller

Jean-Eucher Montagne

Alain Barthelemy

Vincent Kermene

Christian Desagulier

David Sabourdy

Agnès Desfarges-Berthelemot

Sandrine Auroux

Julien Guillot

Brigitte Serreault

Alain Lacombe

Justine Serier

Yves Domaine

Emilie Steck

Hervé Haag

Thibault De La Villegeorges

Yann Gouy

Agnès Desfarges-Berthellemot

Guy-Maël Jacobe De Naurois

David Parrain

An emission/reception device is configured for communication between a ground station and a mobile craft which is provided with a retro-reflector configured to modulate a laser beam received along a direction and to return it along the direction, the mobile craft being situated above a backscattering zone, the emission/reception device generating at least two temporally offset emission/reception sequences, each being associated with a laser beam and comprising successive pairs of associated emission and reception phases, the emission phase including emitting a laser beam from the ground station towards the mobile craft, and the reception phase including receiving a laser beam returned by the retro-reflector, each reception phase being deactivated during the transit through the backscattering zone of the laser beam emitted during the associated emission phase.

Method and system for laser-based communication between a ground station and a mobile craft

A method and a device for securing a space crossed by a high-power laser beam. A security laser beam is produced in the form of an envelope surrounding said high-power laser beam and the emission of the latter is forbidden when an object comes into contact with said envelope.

Method and device for securing a space crossed by a high-power laser beam

The invention concerns a laser amplification system comprising a pumping device and at least one thick amplifier disc having a first face, which is reflective at the wavelengths of a pulsed laser beam of the laser amplification system and of a pump beam of the pumping device, as well as at least one heat-dissipation component to which this first face of the amplifier disc is firmly secured, the saturation fluence of the active medium of the amplifier disc being equal to or less than 3 J&#xb7;cm.

Thick disc laser amplification system and uses thereof

Method and laser oscillator for the generation of a laser beam&#x2014;According to the invention with a view to adjusting, inside said laser oscillator (), the phase of each of the N elementary laser beams (FLE., FLE., FLE.N) generated on the basis of said laser oscillator () in such a way that said elementary laser beams are in phase, the deviation between the phase of an individual elementary laser beam (FLE.) and the phases of the N&#x2212;1 other elementary laser beams (FLE., FLE.N) is converted into a level of luminous intensity by means of at least one optical filtering element to which at least a part of each elementary laser beam is directed.

Method and laser oscillator for the generation of a laser beam

The invention relates to a laser cavity with central extraction by polarisation for coherent coupling of intense intra-cavity beams. The laser cavity () according to the invention comprises an extraction unit () with central extraction, which divides the laser cavity () longitudinally into two functional portions (P, P), namely a first portion (P) including the active components (), which amplifies the laser beams (), and a second portion (P) which performs coherent coupling of the laser beams ().

Laser cavity with central extraction by polarisation for coherent coupling of intense intra-cavity beams

The invention concerns a method which consists in coating uniformly the non-developable surface () with an electrically conductive material (), which is in turn coated, by spraying, with a pattern () of polymerizable protective material, said pattern being polymerized as it is being formed, and then selectively eliminating, through the openings () of said pattern (), the portions of said electrically conductive material () which do not over said electrically conductive patterns.

Method of making electrically conductive patterns on a substrate

The invention concerns a method for producing electrically conductive patterns on a non-developable surface of an insulating substrate, and the resulting device. The invention is characterized in that it consists in: coating the non-developable surface () uniformly with a layer of electrically conductive material (), which is in turn coated with a layer of protective material (), and then, using a mobile laser head, eliminating by laser ablation the portions of said protective substance layer () which do not cover said electrically conductive patterns, then eliminating the portions of said electrically conductive material () exposed by the elimination of said portions of said protective material layer ().

Method of producing electrically conductive patterns on a substrate

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Villennes sur Seine, France

Bruno Esmiller