Patents by Inventor Luc LE GRATIET

Luc LE GRATIET 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).

  • Laser device with a beam carrying controlled orbital angular momentum
    Patent number: 10483720
    Abstract: A laser device is provided for generating a helical-shaped optical wave and includes: (i) a gain region located between one first end defined by a first mirror and a second end defined by an exit region, (ii) a second mirror arranged so as to form with the first mirror an optical cavity including the gain region and a gap between the exit region and the second mirror, (iii) apparatus for pumping the gain region so as to generate the optical wave, wherein the laser device further includes at least one apparatus for shaping the light intensity and/or phase profiles of the optical wave and arranged for selecting at least one rotary-symmetrical transverse mode of the optical wave, the rotary-symmetrical transverse mode being chosen between those with a radial index equal to zero and with an azimuthal index being an integer with a module higher or equal to 1.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: November 19, 2019
    Assignees: UNIVERSITE DE MONTPELLIER, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Arnaud Garnache-Creuillot, Mikhael Myara, Isabelle Sagnes, Luc Le Gratiet, Mohammed Sellahi, Mohammed Seghilani, Philippe Lalanne
  • LASER DEVICE WITH A BEAM CARRYING CONTROLLED ORBITAL ANGULAR MOMENTUM
    Publication number: 20170346257
    Abstract: A laser device is provided for generating a helical-shaped optical wave and includes: (i) a gain region located between one first end defined by a first mirror and a second end defined by an exit region, (ii) a second mirror arranged so as to form with the first mirror an optical cavity including the gain region and a gap between the exit region and the second mirror, (iii) apparatus for pumping the gain region so as to generate the optical wave, wherein the laser device further includes at least one apparatus for shaping the light intensity and/or phase profiles of the optical wave and arranged for selecting at least one rotary-symmetrical transverse mode of the optical wave, the rotary-symmetrical transverse mode being chosen between those with a radial index equal to zero and with an azimuthal index being an integer with a module higher or equal to 1.
    Type: Application
    Filed: December 15, 2015
    Publication date: November 30, 2017
    Inventors: Arnaud GARNACHE-CREUILLOT, Mikhael MYARA, Isabelle SAGNES, Luc LE GRATIET, Mohammed SELLAHI, Mohammed SEGHILANI, Philippe LALANNE