Patents by Inventor David Holleville

David Holleville 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).

  • Compact laser source with reduced spectral width
    Patent number: 8385376
    Abstract: The invention relates to a laser source with an external cavity generating a useful laser beam (Fu), that comprises at least one laser diode DL (10) mounted in an extended optical cavity (30, 82) defined between two reflecting surfaces (92, 48) forming an optical path for a laser beam Fd generated by the laser diode DL, a mode selection filter (44, 86) in the optical path of the cavity for selecting a resonance mode from a range of resonance modes of the laser beam in the cavity.
    Type: Grant
    Filed: April 24, 2008
    Date of Patent: February 26, 2013
    Assignees: Thales and Centre National d'Etudes Spatiales, Observatoire de Paris
    Inventors: David Holleville, Noel Dimarcq
  • COMPACT LASER SOURCE WITH REDUCED SPECTRAL WIDTH
    Publication number: 20110038389
    Abstract: The invention relates to a laser source with an external cavity generating a useful laser beam (Fu), that comprises at least one laser diode DL (10) mounted in an extended optical cavity (30, 82) defined between two reflecting surfaces (92, 48) forming an optical path for a laser beam Fd generated by the laser diode DL, a mode selection filter (44, 86) in the optical path of the cavity for selecting a resonance mode from a range of resonance modes of the laser beam in the cavity.
    Type: Application
    Filed: April 24, 2008
    Publication date: February 17, 2011
    Applicant: THALES
    Inventors: David Holleville, Stephanie Perrin, Noel Dimarcq, Francois-Xavier Esnault
  • Method for modulating an atomic clock signal with coherent population trapping and corresponding atomic clock
    Patent number: 7501906
    Abstract: Method for modulating an atomic clock signal and a corresponding atomic clock. The laser beams (L1, L2) are pulse-modulated in amplitude to illuminate (A) an interactive medium. A detection (B) of the current pulse (Sr) and of the pulses (Sr?1 to Sr?p) preceding said current impulsion is performed. The pulses are superimposed (C) by linear combination to generate a compensated atomic clock signal (SHC) whereof the spectral width is minimized. The invention is applicable to atomic clocks with pulsed interrogation whereof the interactive medium consists of thermal or laser-cooled atoms.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: March 10, 2009
    Assignee: Centre National de la Recherche Scientifique- C.N.R.S
    Inventors: Noël Dimarcq, Stéphane Guerandel, Thomas Zanon, David Holleville
  • Method For Modulating An Atomic Clock Signal With Coherent Population Trapping And Corresponding Atomic Clock
    Publication number: 20070200643
    Abstract: Method for modulating an atomic clock signal and a corresponding atomic clock. The laser beams (L1, L2) are pulse-modulated in amplitude to illuminate (A) an interactive medium. A detection (B) of the current pulse (Sr) and of the pulses (Sr?1 to Sr?p) preceding said current impulsion is performed. The pulses are superimposed (C) by linear combination to generate a compensated atomic clock signal (SHC) whereof the spectral width is minimized. The invention is applicable to atomic clocks with pulsed interrogation whereof the interactive medium consists of thermal or laser-cooled atoms.
    Type: Application
    Filed: March 29, 2005
    Publication date: August 30, 2007
    Inventors: Noel Dimarcq, Stephane Guerandel, Thomas Zanon, David Holleville