Patents by Inventor Franck Laloe

Franck Laloe 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-pumped helium magnetometer
    Patent number: 4806864
    Abstract: A magnetometer comprises a transparent spherical photocell (1) filled with natural helium 4He. A laser (2) of the LNA (lanthanum-neodymium aluminate) type excites the photocell. An oscillator (3) generates a soft discharge inside the photocell (1). The electronic magnetic resonance frequency of helium atoms in the excited metastable state is determined on the basis of the light (FT) transmitted by the photocell, under excitation by a radio electric field, and the magnetic induction is thereby found.
    Type: Grant
    Filed: April 23, 1987
    Date of Patent: February 21, 1989
    Assignee: Centre National De La Recherche Scientifique
    Inventors: Laird Schearer, Michele Leduc, Franck Laloe, Joseph M. Hamel
  • Single mode double Michelson-type laser cavity resonator
    Patent number: 4291281
    Abstract: Cavity resonator arrangement for single mode laser. A double Michelson interferometer is substituted for one of the mirrors of a conventional Fabry-Perot interferometer. The positions of the three mirrors of this double Michelson interferometer are positioned with respect to the mirror limiting the cavity resonator through D.C. controlled piezoelectric shims.
    Type: Grant
    Filed: September 5, 1978
    Date of Patent: September 22, 1981
    Assignee: Agence National de Valorization de la Recherche
    Inventors: Michel Pinard, Carl Aminoff, Gerard Trenec, Franck Laloe