US5140604A
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Mixed strontium and lanthanide oxides and a laser using monocrystals of these oxides
Assignee: Saint Gobain Quartz SAS
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Filing: 1991-03-13
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Granted: 1992-08-18
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Expires: 2011-03-13
Abstract
Abstract Mixed strontium and lanthanide oxides and a laser using monocrystals of these oxides. These oxides with a magnetolead type crystalline structure have the following formula: Sr.sub.x Ln1.sub.y1 Ln2.sub.y2 Ln3.sub.y3 M.sub.z A.sub.a B.sub.b O 19--k in which Ln1 represents at least one trivalent element selected from lanthane, gadolinium and yttrium; Ln2 represents at least one trivalent element selected from neodymium, praseodymium, erbium, holmium and thulium; Ln3 represents an element selected from bivalent europium or trivalent cerium with retention of electric neutrality by virtue of oxygen holes; M represents at least one bivalent metal selected from magnesium, manganese and zinc; A represents at least one trivalent metal selected from aluminum and gallium; B represents a trivalent transition metal selected from chromium and titanium; x, yl, y2, y3, z, a, b and k represent numbers so that 0<x<1, 0≦y1<1, 0<y2<1, 0≦y3<1, 0<z<1, 10.5<a<12, 0≦b≦0.5 and 0≦k≦1 provided that 0<x+y1+y2+y3≦1 and that 11<z+a+b≦12. They exhibit in a monocrystal state (4) laser properties enabling them to be used in power lasers pumped by a laser diode.
Inventors
- 👤 Sylvie Alablanche
- 👤 Jean-Marie Benitez
- 👤 Robert Collongues
- 👤 Jeanine Thery
- 👤 Daniel Vivien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:59
CPC Classifications
C; C30; C30B; C30B29/00; C30B29/10; C30B29/16; C30B29/22; C30B11/00; C30B15/00; C30B17/00; H; H01; H01S; H01S3/00; H01S3/14; H01S3/16; H01S3/1688
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
142 words
Mixed single-phase strontium and lanthanide oxide with a magnetolead type crystalline structure having the following formula (I): Sr.sub.x Ln1.sub.y1 Ln2.sub.y2 Ln3.sub.y3 M.sub.z A.sub.a B.sub.b O.sub.19-k(I) in which Ln1 represents at least one trivalent element selected from lanthane, gadolinium and yttrium; Ln2 represents at least one trivalent element selected from neodymium, praseodymium, erbium, holmium and thulium; Ln3 represents an element selected from bivalent europium or trivalent cerium with retention of electric neutrality by virtue of oxygen holes; M represents at least one bivalent metal selected from magnesium, manganese and zinc; A represents at least one trivalent metal selected from aluminium and gallium; B represents at least one trivalent transition metal selected from chromium and titanium; x, y1, y2, y3, z, a, b and k represent numbers so that 0<x<1, 0≦y1<1, 0<y2<1, 0≦y3<1, 0<z<1, 10.5<a<12, 0≦b≦0.5 and 0≦k≦1 provided that 0<x+y1+y2+y3≦1 and that 11<z+a+b≦12.
Claim 2
Dependent Claim
142 words
Mixed single-phase strontium and lanthanide oxide with a magnetolead type crystalline structure having the following formula (I): Sr.sub.x Ln1.sub.y1 Ln2.sub.y2 Ln3.sub.y3 M.sub.z A.sub.a B.sub.b O.sub.19-k(I) in which Ln1 represents at least one trivalent element selected from lanthane, gadolinium and yttrium; Ln2 represents at least one trivalent element selected from neodymium, praseodymium, erbium, holmium and thulium; Ln3 represents an element selected from bivalent europium or trivalent cerium with retention of electric neutrality by virtue of oxygen holes; M represents at least one bivalent metal selected from magnesium, manganese and zinc; A represents at least one trivalent metal selected from aluminium and gallium; B represents at least one trivalent transition metal selected from chromium and titanium; x, y1, y2, y3, z, a, b and k represent numbers so that 0<x<1, 0≦y1<1, 0<y2<1, 0≦y3<1, 0<z<1, 10.5<a<12, 0≦b≦0.5 and 0≦k≦1 provided that 0<x+y1+y2+y3≦1 and that 11<z+a+b≦12.
Claim 3
Dependent Claim
10 words
Mixed oxide according to claim 1, wherein M represents magnesium.
Claim 4
Dependent Claim
10 words
Mixed oxide according to claim 1, wherein A represents aluminium.
Claim 5
Dependent Claim
10 words
Mixed oxide according to claim 1, wherein Ln1 represents lanthane.
Claim 6
Dependent Claim
11 words
Mixed oxide according to any claim 1, wherein Ln3 represents cerium.
Claim 7
Dependent Claim
12 words
Mixed oxide according to claim 1, wherein y2 satisfied the equation 0.02≦y2≦0.6.
Claim 8
Dependent Claim
16 words
Mixed oxide according to claim 1, wherein it has the formula: Sr.sub.x Ln2.sub.y2 Mg.sub.z Al.sub.a O.sub.19-k.
Claim 9
Dependent Claim
8 words
Mixed oxide according to claim 7, wherein k=0.
Claim 10
Dependent Claim
10 words
Mixed oxide according to claim 1, wherein Ln2 represents neodymium.
Claim 11
Dependent Claim
10 words
Mixed oxide according to claim 1, wherein Ln2 represents praseodymium.
Claim 12
Dependent Claim
25 words
Mixed oxide according to claim 1, wherein it has the formula: Sr.sub.x Ln1.sub.y1 Nd.sub.y2 Mg.sub.z Al.sub.a O.sub.19-k with Ln1 representing lanthane or gadolinium and y1≠0.
Claim 13
Dependent Claim
8 words
Mixed oxide according to claim 1, wherein 0.5≦x+y1+y2+y3≦1.
Claim 14
Dependent Claim
8 words
Mixed oxide according to claim 1, wherein 0≦y1≦0.9.
Claim 15
Dependent Claim
8 words
Mixed oxide according to claim 1, wherein 0≦y3≦0.6.
Claim 16
Dependent Claim
8 words
Mixed oxide according to claim 1, wherein 0.05≦x≦0.95.
Claim 17
Dependent Claim
8 words
Mixed oxide according to claim 1, wherein 0.05≦z≦0.8.
Claim 18
Dependent Claim
48 words
A laser comprising one laser cavity containing as a light emitter a monocrystal of a mixed lanthanide oxide, means for amplifying the light derived from the monocrystal, means for extracting the light outside the laser cavity and optical pumping means, wherein this mixed oxide conforms to claim 1.
Claim 19
Dependent Claim
23 words
Laser according to claim 17 and emitting inside the infrared spectrum, wherein Ln2 represents an element selected from neodymium, holmium, erbium and thulium.
Claim 20
Dependent Claim
15 words
Laser according to claim 17 and emitting inside the visible spectrum, wherein Ln2 represents praseodymium.
Claim 21
Dependent Claim
27 words
Laser according to claim 17 and wavelength-tuneable in the infrared spectrum and comprising tuneability means, wherein Ln2 represents an element selected from neodymium, holmium, thulium and erbium.
Claim 22
Dependent Claim
7 words
Laser according to claim 17, wherein 0.05≦y2≦0.45.
Claim 23
Dependent Claim
7 words
Laser according to claim 17, wherein 0.15≦y2≦0.25.
Claim 24
Dependent Claim
17 words
Laser according to claim 17, wherein the optical pumping means consist of at least one laser diode.
Claim 25
Dependent Claim
26 words
Laser according to claim 17, wherein Ln2 represents neodymium and wherein the optical pumping means consist of at least one laser diode emitting at 800 nm.
References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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