Mixed lanthanide-magnesium aluminates and lasers using monocrystals of these aluminates

Abstract

Abstract Mixed lanthanide-magnesium aluminates and lasers using monocrystals of these aluminates. These lasers in particular incorporate two flash lamps for longitudinally pumping a monocrystalline rod of a magnetoplumbite-aluminate emitting visible or infrared light, amplified between a mirror, a polarizing prism being used for passing to the outside of the laser the amplified light beam. The aluminate is of formula: (La.sub.1-x Tr.sub.x).sub.1-y-v Mg.sub.1-z-t Al.sub.11-u+y+2z/3 Cr.sub.u O 19-t-3v/3 . in which Tr represents a) at least one single trivalent substance chosen from among lanthanides, Y 3+ , Sc 3+ , or b) at least one pair of lanthanides formed from a divalent element and a trivalent element, while retaining the electrical neutrality by adding aluminium or oxygen deficiencies, or any combination of (a) and (b); x is a number such that 0≦x<1; y and v are numbers such that 0≦y+v≦0.4; z and t are numbers such that 0≦z+t<1, provided that when z=t=0, y+v is ≠0 for Tr representing a single trivalent lanthanide; u is a number between 0 and 2, provided that when Tr represents Y 3+ or Sc 3+ u is ≠0, that when x=0 u is ≠0 and that when u=0 x is ≠0.

Inventors

• 👤 Jean-Jacques Aubert
• 👤 Anne-Marie Lejus
• 👤 Bruno Viana
• 👤 Daniel Vivien

Bibliographic Details