Patents by Inventor Marie-Antoinette Di Forte Poisson

Marie-Antoinette Di Forte Poisson 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).

  • Shortwave semiconductor laser
    Patent number: 4494237
    Abstract: A laser diode having an active layer which has a composition:Ga.sub.x In.sub.1-x Pwith: 0.51.ltoreq.x.ltoreq.0.53 corresponding to a point of the straight line of the quaternary diagram GaInAsP which satisfies the condition of compatability of the crystal lattice parameter with that of a GaAs substrate. The confinement layers of the laser diode have a composition corresponding to a point of the straight line of the adjacent quaternary diagram GaAlInP which satisfies the condition of compatability of the crystal lattice parameter with that of the GaAs substrate, namely in respect of that point of said straight line which is located at the most favorable end of the line:In.sub.z Al.sub.1-z Pwith: 0.45.ltoreq.z.ltoreq.0.49.
    Type: Grant
    Filed: June 16, 1982
    Date of Patent: January 15, 1985
    Assignee: Thomson-CSF
    Inventors: Marie-Antoinette Di Forte Poisson, Jean-Pierre Hirtz, Jean-Pascal Duchemin, Baudouin de Cremoux