US4853354A
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Mixed lanthanum-magnesium aluminates and lasers using monocrystals of these aluminates
Assignee: Centre National de la Recherche Scientifique
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Filing: 1987-12-04
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Granted: 1989-08-01
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Expires: 2007-12-04
Abstract
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: La1-xMg1-y-zMtvAl11+x+2y/ 3-vO19-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</=y+z</=1 with 0</=y</=1 and 0</=z</=1; v is a number such that 0<v<1.
Inventors
- 👤 Claude Calvat
- 👤 Laurent Colle
- 👤 Maurice Couchaud
- 👤 Anne-Marie Lejus
- 👤 Richard Moncorge
- 👤 Daniel Vivien
- 👤 Christophe Wyon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:27
CPC Classifications
C; C30; C30B; C30B29/00; C30B29/10; C30B29/16; C30B29/22; C30B15/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
51 words
A mixed lanthanum-magnesium aluminate, of the formula (I): La.sub.1-x Mg.sub.1-y-z-t V.sub.t+u Al.sub.11+x+2y/3-u O.sub.19-z (I) in which x represents a number such that 0<x<0.3; y, z, t and u represent numbers such that 0<y+z+t≦1 and 0<t+u≦1 with 0<y<1, 0<z<1, 0<t≦1 and 0≦u<1; said aluminate being single-phase and having the structure of magnetoplumbite.
Claim 2
Dependent Claim
51 words
A mixed lanthanum-magnesium aluminate, of the formula (I): La.sub.1-x Mg.sub.1-y-z-t V.sub.t+u Al.sub.11+x+2y/3-u O.sub.19-z (I) in which x represents a number such that 0<x<0.3; y, z, t and u represent numbers such that 0<y+z+t≦1 and 0<t+u≦1 with 0<y<1, 0<z<1, 0<t≦1 and 0≦u<1; said aluminate being single-phase and having the structure of magnetoplumbite.
Claim 3
Dependent Claim
12 words
Mixed aluminate according to claim 1, wherein x is such that 0.05≦x≦0.2.
Claim 4
Dependent Claim
15 words
Mixed aluminate according to claim 1, wherein y, z and t are such that 0.3≦y+z+t≦0.6.
Claim 5
Dependent Claim
12 words
Mixed aluminate according to claim 1, wherein u is equal to 0.
Claim 6
Dependent Claim
12 words
Mixed aluminate according to claim 1, wherein t is such that 0.02≦t≦0.2.
Claim 7
Dependent Claim
30 words
Mixed aluminate according to claim 1, wherein u is equal to 0, x is such that 0.05≦x≦0.2, t is such that 0.02≦t≦0.2 and y and t are such that 0.3≦y+t≦0.6.
Claim 8
Dependent Claim
66 words
A mixed lanthanum-magnesium aluminate, of the formula (II): 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 selected from the group consisting of titanium and zirconium; x represents a number such that 0<x<0.3; y and z represent numbers such that 0≦y+z≦1 with 0≦y≦1 and and v represents a number such that 0≦v≦1; the aluminate being single-phase and having the structure of magnetoplumbite.
Claim 9
Dependent Claim
66 words
A mixed lanthanum-magnesium aluminate, of the formula (II): 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 selected from the group consisting of titanium and zirconium; x represents a number such that 0<x<0.3; y and z represent numbers such that 0≦y+z≦1 with 0≦y≦1 and and v represents a number such that 0≦v≦1; the aluminate being single-phase and having the structure of magnetoplumbite.
Claim 10
Dependent Claim
12 words
Mixed aluminate according to claim 7, wherein x is such that 0.05≦x≦0.2.
Claim 11
Dependent Claim
14 words
Mixed aluminate according to claim 7, wherein y and z are such that 0.3≦y+z≦0.6.
Claim 12
Dependent Claim
12 words
Mixed aluminate according to claim 7, wherein v is such that 0.004≦v≦0.2.
Claim 13
Dependent Claim
23 words
Mixed aluminate according to claim 7, wherein x is such that 0.05≦x≦0.2, y is such that 0.3≦y≦0.6, and v is such that 0.004≦v≦0.2.
References Cited (Backward Citations)
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