Patents by Inventor Sebastien LAUX
Sebastien LAUX has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20240113489Abstract: The present invention relates to a device for amplifying a multi-wavelength laser beam, comprising: a. a first active laser medium having a front face and a rear face which is reflective, inclined with respect to each other at a first non-zero inclination, and b. a second active laser medium having a front face suitable for receiving the beam reflected by the rear face and refracted by the front face of the first active laser medium, and a reflective rear face, inclined with respect to each other at a second non-zero inclination, the first inclination, the second inclination and the orientation of the second active laser medium being such that the sub-beams of each wavelength, forming the output beam of the second active laser medium, are parallel to each other at the output of the second active laser medium.Type: ApplicationFiled: December 13, 2021Publication date: April 4, 2024Inventors: Sébastien LAUX, Alain PELLEGRINA, Sandrine RICAUD, Olivier CASAGRANDE, Mathilde CHARBONNEAU
-
Publication number: 20240055818Abstract: The present invention relates to a device for amplifying a multi-wavelength laser beam, comprising: a. An active laser medium having a front face suitable for receiving the beam to be amplified each time the same passes through the active laser medium, and a reflective rear face inclined with respect to the front face, the beam reflected by the rear face and refracted by the front face during the n-th pass being called the n-th useful beam, and b. a first optical return unit arranged along the path of the first useful beam and configured for returning the first useful beam on the front face for a second pass through the active laser medium so that the sub-beams of each wavelength, forming the second useful beam, are parallel to each other at the end of the second pass.Type: ApplicationFiled: December 16, 2021Publication date: February 15, 2024Inventors: Sébastien LAUX, Alain PELLEGRINA, Sandrine RICAUD, Olivier CASAGRANDE, Mathilde CHARBONNEAU
-
Patent number: 11417997Abstract: An M-output, where M>1, chirped pulse amplification chain that includes a stretcher of stretching factor tx_stretch, M amplifiers in cascade, M output compressors respectively placed at the output of each amplifier, wherein it comprises: a partially compressing device placed between the stretcher and the first amplifier, this partially compressing device having at least one partial compression factor, the one (or more than one) partial compression factor(s) being lower than tx_stretch, and an optical switch configured to receive a beam output from the stretcher and to direct it directly to the first amplifier of the cascade or to the partially compressing device depending on the output compressor chosen among the output compressors.Type: GrantFiled: December 7, 2017Date of Patent: August 16, 2022Assignee: THALESInventors: Paul Jougla, Sébastien Laux, Christophe Simon-Boisson, Mathilde Charbonneau
-
Publication number: 20200091671Abstract: An M-output, where M>1, chirped pulse amplification chain that includes a stretcher of stretching factor tx_stretch, M amplifiers in cascade, M output compressors respectively placed at the output of each amplifier, wherein it comprises: a partially compressing device placed between the stretcher and the first amplifier, this partially compressing device having at least one partial compression factor, the one (or more than one) partial compression factor(s) being lower than tx_stretch, and an optical switch configured to receive a beam output from the stretcher and to direct it directly to the first amplifier of the cascade or to the partially compressing device depending on the output compressor chosen among the output compressors.Type: ApplicationFiled: December 7, 2017Publication date: March 19, 2020Inventors: Paul JOUGLA, Sébastien LAUX, Christophe SIMON-BOISSON, Mathilde CHARBONNEAU
-
Publication number: 20190305500Abstract: A folded compressor for a frequency shift system with a predetermined stretch ratio and which includes a compression network positioned to receive an input pulse and an output pulse of the compressor, mounted on a device for dynamic translation and rotation adjustment; a fold dihedral and at least one height adjustment dihedral, the compression network and the dihedrals being configured to form at least two stretched pulses on the compression network. The compression network is divided into two compression sub-networks with the same optical properties, mounted on the adjustment device: a first compression sub-network of determined length L for containing the stretched pulses, but not the input and output pulses, a second compression sub-network of length L2 for containing the input and output pulses, but not the stretched pulses, with L2<l1.Type: ApplicationFiled: July 3, 2017Publication date: October 3, 2019Inventors: Marie ANTIER, Alain PELLEGRINA, Sébastien LAUX, Mathilde CHARBONNEAU
-
Patent number: 9897814Abstract: A device for the sampling of a pulsed laser beam of high energy, typically greater than 1 J, and of large size, having a diameter typically greater than 1 cm, combined with a compressor, comprises, upstream of the compressor: a sample-taking device provided with a sampling diopter capable of transmitting T % of the pulsed laser beam, T being greater than 90, and of reflecting (1?T) % of the pulsed laser beam, the reflected beam being called sampled beam, an afocal capable of reducing the size of the sampled beam, the compressor having a determined useful aperture, a device for reinjecting the reduced sampled beam into this useful aperture.Type: GrantFiled: December 2, 2014Date of Patent: February 20, 2018Assignee: THALESInventors: Sébastien Laux, Paul Jougla, François Lureau
-
Patent number: 9614343Abstract: A device for amplifying a multi-wavelength pulsed laser beam is provided, which comprises: a solid amplifying medium with two planer faces, a front face and a reflecting rear face; and a device for cooling the amplifying medium by the rear face. The front face of the amplifying medium is tilted relative to its rear face by a first non-zero tilt and the device further comprises a trapezoidal prism, with an input face and an output face which form between them a second non-zero tilt, the first and second tilts being such that the beams of each wavelength are parallel to one another at the output of the prism.Type: GrantFiled: October 28, 2013Date of Patent: April 4, 2017Assignee: THALESInventors: Sebastien Laux, Olivier Casagrande, Paul Jougla
-
Publication number: 20170003511Abstract: A device for the sampling of a pulsed laser beam of high energy typically greater than 1 J, and of large size, having a diameter typically greater than 1 cm, combined with a compressor, comprises, upstream of the compressor: a sample-taking device provided with a sampling diopter capable of transmitting T% of the pulsed laser beam, T being greater than 90, and of reflecting (1-T)% of the pulsed laser beam, the reflected beam being called sampled beam, an afocal capable of reducing the size of the sampled beam, the compressor having a determined useful aperture, a device for reinjecting the reduced sampled beam into this useful aperture.Type: ApplicationFiled: December 2, 2014Publication date: January 5, 2017Inventors: Sébastien LAUX, Paul JOUGLA, François LUREAU
-
Patent number: 9209590Abstract: A device for amplifying a laser beam along an axis comprises: an amplifying bar structure of index nc, delimited by a surface connecting the input and output faces of the structure, having a dimension e along the axis and ? along a perpendicular direction, with e<?, and intended to be pumped to become a gain medium with a maximum along a face, and a liquid of index nA which surrounds the structure in relation to its surface and which is absorbent or scattering at the fluorescence wavelength of the amplifying bar structure. The surface comprises a first tooth in the form of a chamfer at its junction with the maximum gain face, to avoid causing parasitic transverse lasing and the liquid of index nA has a heat capacity of greater than 3000 Joules per kilogram per K° to dissipate the thermal power induced by the pumping.Type: GrantFiled: July 19, 2011Date of Patent: December 8, 2015Assignee: ThalesInventors: Stéphane Branly, Christophe Derycke, Sébastien Laux
-
Publication number: 20150303642Abstract: A device for amplifying a multi-wavelength pulsed laser beam is provided, which comprises: a solid amplifying medium with two planer faces, a front face and a reflecting rear face; and a device for cooling the amplifying medium by the rear face. The front face of the amplifying medium is tilted relative to its rear face by a first non-zero tilt and the device further comprises a trapezoidal prism, with an input face and an output face which form between them a second non-zero tilt, the first and second tilts being such that the beams of each wavelength are parallel to one another at the output of the prism.Type: ApplicationFiled: October 28, 2013Publication date: October 22, 2015Applicant: THALESInventors: Sebastien LAUX, Olivier CASAGRANDE, Paul JOUGLA
-
Publication number: 20130215915Abstract: A device for amplifying a laser beam along an axis comprises: an amplifying bar structure of index nc, delimited by a surface connecting the input and output faces of the structure, having a dimension e along the axis and ? along a perpendicular direction, with e<?, and intended to be pumped to become a gain medium with a maximum along a face, and a liquid of index nA which surrounds the structure in relation to its surface and which is absorbent or scattering at the fluorescence wavelength of the amplifying bar structure. The surface comprises a first tooth in the form of a chamfer at its junction with the maximum gain face, to avoid causing parasitic transverse lasing and the liquid of index nA has a heat capacity of greater than 3000 Joules per kilogram per K° to dissipate the thermal power induced by the pumping.Type: ApplicationFiled: July 19, 2011Publication date: August 22, 2013Applicant: THALESInventors: Stéphane Branly, Christophe Derycke, Sébastien Laux