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

US4853354A · kind A · utility

Assignee

• Commissariat a l'Energie Atomique Centre National de la Recherche Scientifique · FR

Inventors

• Claude Calvat · Yssingeaux, FR
• Laurent Colle · Paris, FR
• Maurice Couchaud · Seyssinet-Pariset, FR
• Anne-Marie Lejus · Montrouge, FR
• Richard Moncorge · Pont-à-Mousson, FR
• Daniel Vivien · Garches, FR
• Christophe Wyon · Yssingeaux, FR

Key dates

• Filing date: Dec 4, 1987
• Grant date: Aug 1, 1989
• Expiry date: Dec 4, 2007

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C30B15/00
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

These lasers in particular have two flashlamps (30, 32) for longitudinally pumping a monocrystalline aluminate bar (28) emitting in the visible and near infrared, two mirrors (38, 40) for amplifying the light emitted by the bath, a polarizer prism (42) used for feeding the amplified light beam to the outside of the laser cavity. The magnetoplumbite-type aluminate has in particular the formula: EQU La.sub.1-x Mg.sub.1-y-z Mt.sub.v Al.sub.11+x+2y/ 3-v O.sub.19-z(II) in which Mt represents a transition metal chosen from titanium and zirconium; x is a number such that 0<x<0.3; y and z are numbers such that 0.ltoreq.y+z.ltoreq.1 with 0.ltoreq.y.ltoreq.1 and 0.ltoreq.z.ltoreq.1; v is a number such that 0<v<1.