Patents by Inventor Jean-Eucher Montagne
Jean-Eucher Montagne 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: 20210296841Abstract: A wave guide may have an index profile including at least one maximum. The maximum or maxima of the index profile may correspond respectively to at least one maximum intensity of the outlet radiation with a mode of desired order. The wave guide may also have at least one doping ion configured to absorb the pump radiation. The doping ion or ions may have a concentration profile of doping ions including at least one maximum.Type: ApplicationFiled: March 22, 2021Publication date: September 23, 2021Inventors: Guy MILLOT, Vincent COUDERC, Katarzyna KRUPA, Alessandro TONELLO, Stefan WABNITZ, Jean-Eucher MONTAGNE
-
Patent number: 10367325Abstract: An active element slab for a laser source is presented. The active element slab includes at least one input surface of a pump beam, a first section in the shape of an elongated bar along a longitudinal axis that includes a first doped matrix configured to absorb the beam pump to amplify a laser beam travelling longitudinally, a second section that covers at least partially the first section, the second section that includes a second doped matrix configured to absorb the laser beam and of being transparent to the pump beam.Type: GrantFiled: May 10, 2018Date of Patent: July 30, 2019Assignee: COMPAGNIE INDUSTRIELLE DES LASERS CILASInventors: David Sabourdy, Jean-Eucher Montagne, Alexandre Martins-Santana, Luc Nguyen Duy
-
Publication number: 20180331487Abstract: An active element slab for a laser source is presented. The active element slab includes at least one input surface of a pump beam, a first section in the shape of an elongated bar along a longitudinal axis that includes a first doped matrix configured to absorb the beam pump to amplify a laser beam travelling longitudinally, a second section that covers at least partially the first section, the second section that includes a second doped matrix configured to absorb the laser beam and of being transparent to the pump beam.Type: ApplicationFiled: May 10, 2018Publication date: November 15, 2018Applicant: COMPAGNIE INDUSTRIELLE DES LASERS CILASInventors: David Sabourdy, Jean-Eucher Montagne, Alexandre Martins-Santana, Luc Nguyen Duy
-
Patent number: 10116114Abstract: According to the invention, a plurality of elementary laser beams (fi) are generated, the phases of which are adjusted by an electro-optical feedback loop (6, 7i, 8i, 9) implementing the matrix equation of a phase-contrast filtering device (6).Type: GrantFiled: October 14, 2015Date of Patent: October 30, 2018Assignees: COMPAGNIE INDUSTRIELLE DES LASERS CILAS, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS), UNIVERSITE DE LIMOGESInventors: Vincent Kermene, Agnes Desfarges-Berthelemot, Paul Armand, Joel Benoist, David Kabeya, Alain Barthelemy, David Sabourdy, Jean-Eucher Montagne
-
Patent number: 9887512Abstract: 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·cm?2.Type: GrantFiled: May 20, 2014Date of Patent: February 6, 2018Assignees: COMPAGNIE INDUSTRIELLE DES LASERS CILAS, AIRBUS DEFENCE AND SPACE SASInventors: Jean-Eucher Montagne, Sandrine Auroux, Bruno Esmiller
-
Patent number: 9819140Abstract: The laser cavity is of the unstable type and is provided with a passive Q-switch, the passive Q-switch comprising a saturable absorber that has an absorption gradient, so that the absorption profile of the saturable absorber is inhomogeneous over the cross section of the beam travelling in the laser cavity.Type: GrantFiled: March 27, 2015Date of Patent: November 14, 2017Assignee: COMPAGNIE INDUSTRIELLE DES LASERS CILASInventor: Jean-Eucher Montagne
-
Publication number: 20170324213Abstract: According to the invention, a plurality of elementary laser beams (fi) are generated, the phases of which are adjusted by an electro-optical feedback loop (6, 7i, 8i, 9) implementing the matrix equation of a phase-contrast filtering device (6).Type: ApplicationFiled: October 14, 2015Publication date: November 9, 2017Inventors: Vincent KERMENE, Agnes DESFARGES-BERTHELEMOT, Paul ARMAND, Joel BENOIST, David KABEYA, Alain BARTHELEMY, David SABOURDY, Jean-Eucher MONTAGNE
-
Publication number: 20160118764Abstract: 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·cm?2.Type: ApplicationFiled: May 20, 2014Publication date: April 28, 2016Applicants: COMPAGNIE INDUSTRIELLE DES LASERS CILAS, AIRBUS DEFENCE AND SPACE SASInventors: Jean-Eucher Montagne, Sandrine Auroux, Bruno Esmiller
-
Patent number: 9166359Abstract: Method and laser oscillator for the generation of a laser beam—According to the invention with a view to adjusting, inside said laser oscillator (1), the phase of each of the N elementary laser beams (FLE.1, FLE.2, FLE.N) generated on the basis of said laser oscillator (1) in such a way that said elementary laser beams are in phase, the deviation between the phase of an individual elementary laser beam (FLE.1) and the phases of the N?1 other elementary laser beams (FLE.2, 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.Type: GrantFiled: November 29, 2011Date of Patent: October 20, 2015Assignee: COMPAGNIE INDUSTRIELLE DES LASERS CILASInventors: David Sabourdy, Jean-Eucher Montagne, Alain Barthelemy, Agnès Desfarges-Berthellemot, Vincent Kermene, Julien Guillot, Brigitte Serreault, Bruno Esmiller
-
Publication number: 20150280392Abstract: The laser cavity is of the unstable type and is provided with a passive Q-switch, the passive Q-switch comprising a saturable absorber that has an absorption gradient, so that the absorption profile of the saturable absorber is inhomogeneous over the cross section of the beam travelling in the laser cavity.Type: ApplicationFiled: March 27, 2015Publication date: October 1, 2015Applicant: COMPAGNIE INDUSTRIELLE DES LASERS CILASInventor: JEAN-EUCHER MONTAGNE
-
Patent number: 8913645Abstract: The invention relates to a laser cavity with central extraction by polarisation for coherent coupling of intense intra-cavity beams. The laser cavity (1) according to the invention comprises an extraction unit (7) with central extraction, which divides the laser cavity (1) longitudinally into two functional portions (P1, P2), namely a first portion (P1) including the active components (3), which amplifies the laser beams (4), and a second portion (P2) which performs coherent coupling of the laser beams (4).Type: GrantFiled: May 4, 2011Date of Patent: December 16, 2014Assignees: Compagnie Industrielle des Laser CILAS, Astrium SASInventors: David Sabourdy, Jean-Eucher Montagne, Alain Barthelemy, Agnes Desfarges-Berthelemot, Vincent Kermene, Sandrine Auroux, Julien Guillot, Brigitte Serreault, Bruno Esmiller
-
Publication number: 20130342896Abstract: Method and laser oscillator for the generation of a laser beam—According to the invention with a view to adjusting, inside said laser oscillator (1), the phase of each of the N elementary laser beams (FLE.1, FLE.2, FLE.N) generated on the basis of said laser oscillator (1) in such a way that said elementary laser beams are in phase, the deviation between the phase of an individual elementary laser beam (FLE.1) and the phases of the N?1 other elementary laser beams (FLE.2, 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.Type: ApplicationFiled: November 29, 2011Publication date: December 26, 2013Applicant: COMPAGNIE INDUSTRIELLE DES LASERS-CILASInventors: David Sabourdy, Jean-Eucher Montagne, Alain Barthelemy, Agnés Desfarges-Berthellemot, Vincent Kermene, Julien Guillot, Brigitte Serreault, Bruno Esmiller
-
Publication number: 20130121364Abstract: The invention relates to a laser cavity with central extraction by polarisation for coherent coupling of intense intra-cavity beams. The laser cavity (1) according to the invention comprises an extraction unit (7) with central extraction, which divides the laser cavity (1) longitudinally into two functional portions (P1, P2), namely a first portion (P1) including the active components (3), which amplifies the laser beams (4), and a second portion (P2) which performs coherent coupling of the laser beams (4).Type: ApplicationFiled: May 4, 2011Publication date: May 16, 2013Applicant: COMPAGNIE INDUSTRIELLE DES LASERS CILASInventors: David Sabourdy, Jean-Eucher Montagne, Alain Barthelemy, Agnes Desfarges-Berthelemot, Vincent Kermene, Sandrine Auroux, Julien Guillot, Brigitte Serreault, Bruno Esmiller
-
Patent number: 7817701Abstract: An active element for a laser source, the active element comprising an elongated bar with a reflective lateral surface, doped to be able to absorb at least a pumping beam being propagated at least approximately longitudinally in the bar in order to amplify at least a laser radiation also being propagated longitudinally; and a jacket in contact with the lateral surface of the bar and presenting a refractive index smaller than that of the bar, in the reflective lateral surface of the bar, there is at least one dull-ground diffusing zone able to interrupt the paths of spurious laser modes being propagated in the bar by total internal reflections on the lateral surface.Type: GrantFiled: May 27, 2008Date of Patent: October 19, 2010Assignee: Compagnie Industrielle des Lasers CilasInventors: Alexandra Rapaport, Luc Nguyen, Jean-Eucher Montagne
-
Patent number: 7636379Abstract: A pumping system for a laser source includes a pump diode that emits a pump beam having a central wavelength that varies with temperature. A selective mirror having a plurality of spectral reflectivity peaks, corresponding to a plurality of predetermined wavelengths, locks the operation of the pump diode onto one of the predetermined wavelengths in accordance with temperature.Type: GrantFiled: April 13, 2006Date of Patent: December 22, 2009Assignee: Compagnie Industrielle des Lasers CilasInventors: Jean-Eucher Montagne, Marc Le Neve
-
Publication number: 20090052493Abstract: According to the invention, the lateral surface (5) of the doped bar (2) comprises at least one dull-ground diffusing zone (19) able to interrupt the paths of the spurious laser modes.Type: ApplicationFiled: May 27, 2008Publication date: February 26, 2009Applicant: COMPAGNIE INDUSTRIELLE DES LASERS CILASInventors: Alexandra RAPAPORT, Luc Nguyen, Jean-Eucher Montagne
-
Publication number: 20070036195Abstract: The active element (1) comprises an elongate rod (2) that comprises a doped matrix capable of absorbing at least one pump beam (3) in order to amplify at least laser radiation (4) propagating longitudinally, the length and the doping of said elongate rod (2) being such that the proportion of pump energy absorbed by said elongate rod (2) is greater than 90% for the wavelength of an operational spectral range having the lowest absorption coefficient.Type: ApplicationFiled: April 21, 2006Publication date: February 15, 2007Applicant: COMPAGNIE INDUSTRIELLE DES LASERS CILASInventors: Jean-Eucher Montagne, Louis Cabaret
-
Publication number: 20060239323Abstract: The pumping system (1) comprises at least one pump diode (12) capable of emitting a pump beam (5), the wavelength of which varies with temperature, at least one collimation means (13), and at least one selective mirror (14) comprising a plurality of spectral reflectivity peaks for locking the operation of the pump diode (12) each time onto at least one of these peaks upon a change in temperature of the pump diode (12) so that the pumping system (1) emits a pump beam (5) whose wavelength varies in steps, corresponding in succession to a plurality of predetermined wavelengths upon the change in temperature.Type: ApplicationFiled: April 13, 2006Publication date: October 26, 2006Applicant: COMPAGNIE INDUSTRIELLE DES LASERS CILASInventors: Jean-Eucher Montagne, Marc Le Neve
-
Patent number: 6611545Abstract: Active element for a laser source and laser source comprising such an active element. According to the invention, the active element for a laser source comprises an elongate rod comprising a doped matrix capable of absorbing a pump beam in order to amplify laser radiation propagating longitudinally, at least one input face for the pump beam, a first reflection face for the pump beam which is inclined with respect to the longitudinal axis of the rod and at least one interacting second reflection face, at least one of the input face and second reflection face being equally inclined.Type: GrantFiled: January 3, 2001Date of Patent: August 26, 2003Assignee: Compagnie Industrielle des Lasers CilasInventors: Louis Cabaret, Jean-Eucher Montagne
-
Patent number: 6608851Abstract: A laser source (1) includes a pumping system (2) and an active element (3) which comprises a doped elongate rod (4) and at least one optical block (5, 6) for guiding the pump rays (F) of at least one pump beam toward the rod (4). The pumping system (2) generates a number of parallel pump rays (F). The entry face (5A, 6A) of the optical block (5, 6) is inclined to the longitudinal axis (X—X) of the rod (4) and is not orthogonal to the pump rays (F) in order to deflect the pump rays (F) by refraction so as to transmit them toward the rod (4), and the inclination of the entry face (5A, 6A) is such that the pump rays (F) reach the bar (4) so as to be distributed over its entire length.Type: GrantFiled: December 12, 2001Date of Patent: August 19, 2003Assignee: Compagnie Industrielle des Lasers CilasInventor: Jean-Eucher Montagne