Patents by Inventor Xavier Letartre

Xavier Letartre 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).

  • Device for controlling optical frequency, method of manufacturing such a device
    Patent number: 8885247
    Abstract: The present invention relates to a device for controlling optical frequency (F1, F2) about a central working frequency (F0). This device comprises a vertical cavity (2) formed of two parallel and partially reflecting walls (3a, 3b), and a membrane (6) comprising at least one layer (7a, 7b) structured in the form of a photonic crystal. In this device, the two walls (3a, 3b) are separated by an optical distance substantially proportional to half the wavelength (?0) corresponding to the central working frequency (F0). The membrane (6) is integrated between the walls (3a, 3b) of the cavity (2) and devised in such a way as to exhibit a mode of optical resonance at this central working wavelength (?0). At least one layer of the device is made up of at least one portion of a material exhibiting nonlinear optical properties.
    Type: Grant
    Filed: July 26, 2010
    Date of Patent: November 11, 2014
    Assignee: Centre National de la Recherche Scientific—CNRS
    Inventors: Xavier Letartre, Pierre Viktorovitch, Jean-Louis Leclercq, Christian Seassal
  • Device with wavelength selective coupler for collecting light emitted by a laser source
    Patent number: 8483527
    Abstract: A device for collecting light emitted by a laser source, including an optical wave guide arranged so as to collect a light signal emitted by the laser source, by coupling. The wave guide includes a loop coupled to a laser source in two coupling zones making it possible to recover optical modes circulating along the direction opposite to the required direction for the signal output from the device.
    Type: Grant
    Filed: July 9, 2009
    Date of Patent: July 9, 2013
    Assignees: Commissariat à l'énergie atomique et aux énergies alternatives, Centre National de la Recherche Scientifique
    Inventors: Fabien Mandorlo, Jean-Marc Fedeli, Pedro Rojo-Romeo, Xavier Letartre, Christian Seassal
  • DEVICE FOR CONTROLLING OPTICAL FREQUENCY, METHOD OF MANUFACTURING SUCH A DEVICE
    Publication number: 20120170109
    Abstract: The present invention relates to a device for controlling optical frequency (F1, F2) about a central working frequency (F0). This device comprises a vertical cavity (2) formed of two parallel and partially reflecting walls (3a, 3b), and a membrane (6) comprising at least one layer (7a, 7b) structured in the form of a photonic crystal. In this device, the two walls (3a, 3b) are separated by an optical distance substantially proportional to half the wavelength (?0) corresponding to the central working frequency (F0). The membrane (6) is integrated between the walls (3a, 3b) of the cavity (2) and devised in such a way as to exhibit a mode of optical resonance at this central working wavelength (?0). At least one layer of the device is made up of at least one portion of a material exhibiting nonlinear optical properties.
    Type: Application
    Filed: July 26, 2010
    Publication date: July 5, 2012
    Applicant: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE-CNRS
    Inventors: Xavier Letartre, Pierre Viktorovitch, Jean-Louis Leclercq, Christian Seassal
  • DEVICE WITH WAVELENGTH SELECTIVE COUPLER FOR COLLECTING LIGHT EMITTED BY A LASER SOURCE
    Publication number: 20110243501
    Abstract: A device for collecting light emitted by a laser source, including an optical wave guide arranged so as to collect a light signal emitted by the laser source, by coupling. The wave guide includes a loop coupled to a laser source in two coupling zones making it possible to recover optical modes circulating along the direction opposite to the required direction for the signal output from the device.
    Type: Application
    Filed: July 9, 2009
    Publication date: October 6, 2011
    Applicants: Comm A L'ener Atom Et Aux Energies Alt, Ecole Centrale De Lyon, Centre National De La Recherche Scientifique
    Inventors: Fabien Mandorlo, Jean-Marc Fedeli, Pedro Rojo-Romeo, Xavier Letartre, Christian Seassal