Patents by Inventor Jean-Michel Jonathan

Jean-Michel Jonathan 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).

  • Wavelength tunable laser source
    Publication number: 20040141533
    Abstract: This invention relates to a continuously wavelength tunable monomode laser source with external cavity comprising a resonant cavity having a reflecting plane face, means for extracting a portion of the luminous flux and a retroreflecting dispersive device, an amplifier wave guide located inside the resonant cavity, means for controlling the retroreflecting dispersive device providing continuous tunability.
    Type: Application
    Filed: March 17, 2004
    Publication date: July 22, 2004
    Inventors: Herve Lefevre, Philippe Graindorge, Gerald Roosen, Jean-Michel Jonathan, Gilles Pauliat
  • Self-adapting filters for fine-tuning laser emissions
    Patent number: 6674782
    Abstract: Laser type source of coherent luminous radiation including a resonant cavity, an amplification medium placed in the resonant cavity and a dynamic photosensitive material which is placed in the resonant cavity to form a self-adapting spectral and/or spatial filter, characterized in that the cavity is a ring laser cavity and in that the dynamic photosensitive material is placed at the intersection of two beams.
    Type: Grant
    Filed: April 25, 2001
    Date of Patent: January 6, 2004
    Assignee: Centre National de la Recherche Scientifique - CNRS
    Inventors: Gérald Roosen, Alain Brun, Nicolas Huot, Jean-Michel Jonathan, Gilles Pauliat, Patrick Georges
  • Self-adapting filters for fine-tuning laser emissions
    Publication number: 20020006150
    Abstract: Laser type source of coherent luminous radiation including a resonant cavity, an amplification medium placed in the resonant cavity and a dynamic photosensitive material which is placed in the resonant cavity to form a self-adapting spectral and/or spatial filter, characterized in that the cavity is a ring laser cavity and in that the dynamic photosensitive material is placed at the intersection of two beams.
    Type: Application
    Filed: April 25, 2001
    Publication date: January 17, 2002
    Inventors: Gerald Roosen, Alain Brun, Nicolas Huot, Jean-Michel Jonathan, Gilles Pauliat, Patrick Georges