Patents Assigned to L'Etat Francais represente par le Ministre des P.T.T. (C.N.E.T.)
  • Patent number: 4627064
    Abstract: The invention relates to a novel oxide for tunable lasers. These oxides comply with the formula:(A.sub.1-x X.sub.x).sub.n (B.sub.1-y Y.sub.y).sub.m O.sub.4in whichA represents one or more elements chosen from the group Mg, Mn and Zn;X represents one or more optically active divalent cations chosen from among V, Ni and Co;B represents one or more elements of the same valence chosen in the group comprising Si, Ge, P, Te, W, Al, In, Ga and Mo;Y represents one or more optically active trivalent cations chosen from among Cr, V and Ni;x is such that 0.ltoreq.x.ltoreq.0.15;y is such that 0.ltoreq.y.ltoreq.0.15; andm and n are integers such that 2n+vm=8 with v representing the valence of B, provided that y=0 when B represents one or more elements chosen from among Si, Ge, P, Te, W and Mo and x and y are not both equal to 0.As an example of such oxides, reference is made to Mg.sub.0.99 Ni.sub.0.01 Al.sub.2 O.sub.
    Type: Grant
    Filed: November 20, 1984
    Date of Patent: December 2, 1986
    Assignee: L'Etat Francais represente par le Ministre des P.T.T. (C.N.E.T.)
    Inventors: Francois Auzel, Richard Moncorge, Denise Morin