Patents by Inventor Pierre Jean Devilder

Pierre Jean Devilder 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).

  • Three-dimensional optical amplifier structure
    Patent number: 7006283
    Abstract: The present invention relates to a multi-pass three-dimensional amplifier structure in which a beam of light traverses an amplifier medium multiple times via distinct multiple paths. The distribution of the multiple paths being such that the volume occupied by the multiple paths inside the amplifier medium substantially overlaps with the volume of the amplifier medium being optically pumped by an optical pump beam. The distribution of the optical paths is such that no more than two of the multiple paths lie in a same plane. The astigmatism induced by anisotropic amplifying crystals is self-compensated by aligning the crystallographic axes of the amplifying crystal at a 45° angle to the longitudinal axis of the redirecting means.
    Type: Grant
    Filed: April 12, 2005
    Date of Patent: February 28, 2006
    Assignee: JDS Uniphase Corporation
    Inventors: Laurent Lefort, Patrick Georges, Francois Balembois, Pierre Jean Devilder, Sebastien Forget
  • Three-dimensional optical amplifier structure
    Publication number: 20030161035
    Abstract: A multi-pass three-dimensional amplifier structure in which a beam to be amplified traverses an amplifier medium multiple times through distinct multiple paths. The distribution of the multiple paths being such that the volume occupied by said multiple paths inside the amplifier medium substantially overlaps with the volume of the amplifier medium being optically pumped by an optical pump beam. Also, the distribution of said optical paths being such that no more than two of the multiple paths lie in a same plane.
    Type: Application
    Filed: January 13, 2003
    Publication date: August 28, 2003
    Applicant: JDS UNIPHASE CORPORATION
    Inventors: Patrick Georges, Francois Balembois, Pierre Jean Devilder, Sebastien Forget
  • Sub-nanosecond passively q-switched microchip laser system
    Patent number: 6373864
    Abstract: A sub-nanosecond passively Q-switched microchip laser is disclosed. It combines an optically pumped, passively Q-switched, high-frequency, microchip laser producing short pulses with an optically end-pumped amplifier producing high small-signal gain while pumped at low power. The microchip laser for emitting pulsed laser radiation is a monolithic body comprising two reflective elements defining an optical resonator for laser radiation, a laser gain medium, e.g., Nd:YAG, and a saturable absorber medium, e.g., Cr4+:YAG placed inside said resonator. The optical amplifier stage for amplifying the laser radiation comprises an amplifying medium, e.g., Nd:YVO4. The microchip laser and the amplifier are optically end-pumped, preferably by high-brightness diodes. This entirely passive laser system directly produces &mgr;J pulses at repetition rates of about 45 kHz.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: April 16, 2002
    Assignee: Nanolase S.A.
    Inventors: Patrick Georges, Francois Balembois, Frederic Druon, Alain Brun, Pierre Jean Devilder