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).

  • Patent number: 10367325
    Abstract: 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: Grant
    Filed: May 10, 2018
    Date of Patent: July 30, 2019
    Assignee: COMPAGNIE INDUSTRIELLE DES LASERS CILAS
    Inventors: David Sabourdy, Jean-Eucher Montagne, Alexandre Martins-Santana, Luc Nguyen Duy
  • Publication number: 20180331487
    Abstract: 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: Application
    Filed: May 10, 2018
    Publication date: November 15, 2018
    Applicant: COMPAGNIE INDUSTRIELLE DES LASERS CILAS
    Inventors: David Sabourdy, Jean-Eucher Montagne, Alexandre Martins-Santana, Luc Nguyen Duy
  • Patent number: 10116114
    Abstract: 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: Grant
    Filed: October 14, 2015
    Date of Patent: October 30, 2018
    Assignees: COMPAGNIE INDUSTRIELLE DES LASERS CILAS, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS), UNIVERSITE DE LIMOGES
    Inventors: Vincent Kermene, Agnes Desfarges-Berthelemot, Paul Armand, Joel Benoist, David Kabeya, Alain Barthelemy, David Sabourdy, Jean-Eucher Montagne
  • Patent number: 9887512
    Abstract: 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: Grant
    Filed: May 20, 2014
    Date of Patent: February 6, 2018
    Assignees: COMPAGNIE INDUSTRIELLE DES LASERS CILAS, AIRBUS DEFENCE AND SPACE SAS
    Inventors: Jean-Eucher Montagne, Sandrine Auroux, Bruno Esmiller
  • Patent number: 9819140
    Abstract: 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: Grant
    Filed: March 27, 2015
    Date of Patent: November 14, 2017
    Assignee: COMPAGNIE INDUSTRIELLE DES LASERS CILAS
    Inventor: Jean-Eucher Montagne
  • Publication number: 20170324213
    Abstract: 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: Application
    Filed: October 14, 2015
    Publication date: November 9, 2017
    Inventors: Vincent KERMENE, Agnes DESFARGES-BERTHELEMOT, Paul ARMAND, Joel BENOIST, David KABEYA, Alain BARTHELEMY, David SABOURDY, Jean-Eucher MONTAGNE
  • Publication number: 20160118764
    Abstract: 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: Application
    Filed: May 20, 2014
    Publication date: April 28, 2016
    Applicants: COMPAGNIE INDUSTRIELLE DES LASERS CILAS, AIRBUS DEFENCE AND SPACE SAS
    Inventors: Jean-Eucher Montagne, Sandrine Auroux, Bruno Esmiller
  • Patent number: 9166359
    Abstract: 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: Grant
    Filed: November 29, 2011
    Date of Patent: October 20, 2015
    Assignee: COMPAGNIE INDUSTRIELLE DES LASERS CILAS
    Inventors: David Sabourdy, Jean-Eucher Montagne, Alain Barthelemy, Agnès Desfarges-Berthellemot, Vincent Kermene, Julien Guillot, Brigitte Serreault, Bruno Esmiller
  • Publication number: 20150280392
    Abstract: 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: Application
    Filed: March 27, 2015
    Publication date: October 1, 2015
    Applicant: COMPAGNIE INDUSTRIELLE DES LASERS CILAS
    Inventor: JEAN-EUCHER MONTAGNE
  • Patent number: 8913645
    Abstract: 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: Grant
    Filed: May 4, 2011
    Date of Patent: December 16, 2014
    Assignees: Compagnie Industrielle des Laser CILAS, Astrium SAS
    Inventors: David Sabourdy, Jean-Eucher Montagne, Alain Barthelemy, Agnes Desfarges-Berthelemot, Vincent Kermene, Sandrine Auroux, Julien Guillot, Brigitte Serreault, Bruno Esmiller
  • Publication number: 20130342896
    Abstract: 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: Application
    Filed: November 29, 2011
    Publication date: December 26, 2013
    Applicant: COMPAGNIE INDUSTRIELLE DES LASERS-CILAS
    Inventors: David Sabourdy, Jean-Eucher Montagne, Alain Barthelemy, Agnés Desfarges-Berthellemot, Vincent Kermene, Julien Guillot, Brigitte Serreault, Bruno Esmiller
  • Publication number: 20130121364
    Abstract: 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: Application
    Filed: May 4, 2011
    Publication date: May 16, 2013
    Applicant: COMPAGNIE INDUSTRIELLE DES LASERS CILAS
    Inventors: David Sabourdy, Jean-Eucher Montagne, Alain Barthelemy, Agnes Desfarges-Berthelemot, Vincent Kermene, Sandrine Auroux, Julien Guillot, Brigitte Serreault, Bruno Esmiller
  • Patent number: 7817701
    Abstract: 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: Grant
    Filed: May 27, 2008
    Date of Patent: October 19, 2010
    Assignee: Compagnie Industrielle des Lasers Cilas
    Inventors: Alexandra Rapaport, Luc Nguyen, Jean-Eucher Montagne
  • Patent number: 7636379
    Abstract: 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: Grant
    Filed: April 13, 2006
    Date of Patent: December 22, 2009
    Assignee: Compagnie Industrielle des Lasers Cilas
    Inventors: Jean-Eucher Montagne, Marc Le Neve
  • Publication number: 20090052493
    Abstract: 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: Application
    Filed: May 27, 2008
    Publication date: February 26, 2009
    Applicant: COMPAGNIE INDUSTRIELLE DES LASERS CILAS
    Inventors: Alexandra RAPAPORT, Luc Nguyen, Jean-Eucher Montagne
  • Publication number: 20070036195
    Abstract: 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: Application
    Filed: April 21, 2006
    Publication date: February 15, 2007
    Applicant: COMPAGNIE INDUSTRIELLE DES LASERS CILAS
    Inventors: Jean-Eucher Montagne, Louis Cabaret
  • Publication number: 20060239323
    Abstract: 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: Application
    Filed: April 13, 2006
    Publication date: October 26, 2006
    Applicant: COMPAGNIE INDUSTRIELLE DES LASERS CILAS
    Inventors: Jean-Eucher Montagne, Marc Le Neve
  • Patent number: 6611545
    Abstract: 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: Grant
    Filed: January 3, 2001
    Date of Patent: August 26, 2003
    Assignee: Compagnie Industrielle des Lasers Cilas
    Inventors: Louis Cabaret, Jean-Eucher Montagne
  • Patent number: 6608851
    Abstract: 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: Grant
    Filed: December 12, 2001
    Date of Patent: August 19, 2003
    Assignee: Compagnie Industrielle des Lasers Cilas
    Inventor: Jean-Eucher Montagne
  • Patent number: 6558972
    Abstract: According to this method, in order to fabricate active elements which comprise at least one doped part comprising a doping capable of absorbing a pump beam and at least one undoped part, and which have opposed faces of the same geometrical shape, a process of preparing an elongate active rod (5), which has a cross section identical to said geometrical shape, said process comprising at least one step of cutting and one step of joining at least one doped block (6) and at least one undoped block (7, 8), and a process of forming a plurality of active elements from the active rod (5), said formation process comprising at least one step of transverse cutting along the active rod (5) and the step of collectively treating surfaces of the active elements, are carried out in succession.
    Type: Grant
    Filed: December 13, 2001
    Date of Patent: May 6, 2003
    Assignee: Compagnie Industrielle des Lasers Cilas
    Inventor: Jean-Eucher Montagne