Patent US3719901A successfully refreshed from Google Patents.
US3719901A
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LASER WITH A MONOCRYSTALLINE YALO :Nd ACTIVE MEDIUM
Assignee: Raytheon Co
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Filing: 1971-03-12
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Granted: 1973-03-06
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Expires: 1991-03-12
Abstract
Abstract Nd 3 ions serve as a dopant in monocrystalline YAlO3 forming an active solid state lasing medium.
Inventors
- 👤 M Bass
- 👤 R Monchamp
- 👤 M Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:12
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/14; H01S3/16; H01S3/163; H01S3/1631; H01S3/1638
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
46 words
A single crystal composition of matter consisting of a solid rare earth orthoaluminate doped with rare earth ions, said crystal having an orthorombic lattice structure and enclosing a volume at least equal to 1 cubic centimeter, and having a maximum dimension substantially greater than 1 centimeter.
Claim 2
Dependent Claim
46 words
A single crystal composition of matter consisting of a solid rare earth orthoaluminate doped with rare earth ions, said crystal having an orthorombic lattice structure and enclosing a volume at least equal to 1 cubic centimeter, and having a maximum dimension substantially greater than 1 centimeter.
Claim 3
Dependent Claim
19 words
A single crystal composition of matter in accordance with claim 1 wherein said rare earth dopant comprises trivalent neodymium.
Claim 4
Dependent Claim
19 words
A single crystal composition of matter in accordance with claim 2 wherein said rare earth orthoaluminate is yttrium orthoaluminate.
Claim 5
Dependent Claim
45 words
A composition of matter comprising a solid solution of neodymium ions in crystalline yttrium orthoaluminate wherein said yttrium orthoaluminate comprises a single crystal body, and encloses a volume at least equal to 1 cubic centimeter and has a maximum dimension substantially greater than 1 centimeter.
Claim 6
Dependent Claim
45 words
A composition of matter comprising a solid solution of neodymium ions in crystalline yttrium orthoaluminate wherein said yttrium orthoaluminate comprises a single crystal body, and encloses a volume at least equal to 1 cubic centimeter and has a maximum dimension substantially greater than 1 centimeter.
Claim 7
Dependent Claim
15 words
A composition of matter in accordance with claim 4 wherein said neodymium ions are trivalent.
Claim 8
Dependent Claim
16 words
A composition of matter in accordance with claim 5 wherein said crystal lattice structure is orthorhombic.
Claim 9
Dependent Claim
51 words
A composition of matter comprising a solid solution of yttrium orthoaluminate doped with trivalent neodymium and trivalent chromium ions wherein said yttrium orthoaluminate is an anisotropic orthorhombic single crystal body, and encloses a volume at least equal to 1 cubic centimeter and has a maximum dimension substantially greater than 1 centimeter.
Claim 10
Dependent Claim
51 words
A composition of matter comprising a solid solution of yttrium orthoaluminate doped with trivalent neodymium and trivalent chromium ions wherein said yttrium orthoaluminate is an anisotropic orthorhombic single crystal body, and encloses a volume at least equal to 1 cubic centimeter and has a maximum dimension substantially greater than 1 centimeter.
Claim 11
Dependent Claim
63 words
An active laser medium consisting of the composition of trivalent neodymium within the concentration range from 1 X 1019 ions per cubic centimeter to 2 X 1021 ions per cubic centimeter in a single crystal body of anisotropic orthorhombic yttrium orthoaluminate, said body having a maximum dimension substantially greater than 1 centimeter and enclosing a volume at least equal to 1 cubic centimeter.
Claim 12
Dependent Claim
63 words
An active laser medium consisting of the composition of trivalent neodymium within the concentration range from 1 X 1019 ions per cubic centimeter to 2 X 1021 ions per cubic centimeter in a single crystal body of anisotropic orthorhombic yttrium orthoaluminate, said body having a maximum dimension substantially greater than 1 centimeter and enclosing a volume at least equal to 1 cubic centimeter.
Claim 13
Dependent Claim
57 words
A fluorescent crystalline composition of matter consisting of a single crystal body of solid YAlO3 enclosing a volume at least equal to 1 cubic centimeter a maximum dimension substantially greater than 1centimeter doped with Nd 3 ions within the concentration range from 1 X 1019 ions per cubic centimeter to 2 X 1021 ions per cubic centimeter.
Claim 14
Dependent Claim
57 words
A fluorescent crystalline composition of matter consisting of a single crystal body of solid YAlO3 enclosing a volume at least equal to 1 cubic centimeter a maximum dimension substantially greater than 1centimeter doped with Nd 3 ions within the concentration range from 1 X 1019 ions per cubic centimeter to 2 X 1021 ions per cubic centimeter.
Claim 15
Dependent Claim
95 words
A fluorescent crystalline composition of matter consisting of a single crystal body of solid YAlO3 enclosing a volume at least equal to 1 cubic centimeter a maximum dimension substantially greater than 1 centimeter doped with Nd 3 Cr 3 ions, in which the Nd 3 ions are in the concentration range from 1 X 1019 ions per cubic centimeter to 2 X 1021 ions per cubic centimeter, and in which the Cr 3 ions are within the concentration range from 1 X 105 ions per cubic centimeter to 1 X 1021 ions per cubic centimeter.
Claim 16
Dependent Claim
95 words
A fluorescent crystalline composition of matter consisting of a single crystal body of solid YAlO3 enclosing a volume at least equal to 1 cubic centimeter a maximum dimension substantially greater than 1 centimeter doped with Nd 3 Cr 3 ions, in which the Nd 3 ions are in the concentration range from 1 X 1019 ions per cubic centimeter to 2 X 1021 ions per cubic centimeter, and in which the Cr 3 ions are within the concentration range from 1 X 105 ions per cubic centimeter to 1 X 1021 ions per cubic centimeter.
Claim 17
Dependent Claim
92 words
An active laser medium consisting of the composition of trivalent neodymium and trivalent chromium in a single crystal body of anisotropic orthorhomic crystalline yttrium orthoaluminate enclosing a volume at least equal to 1 cubic centimeter and having a maximum dimension substantially greater than 1 centimeter, the neodymium being within the concentration range from 1 X 1019 ions per cubic centimeter to 2 X 1021 ions per cubic centimeter, and the chromium being within the concentration range from 1 X 105 ions per cubic centimeter to 1 X 1021 ions per cubic centimeter.
Claim 18
Dependent Claim
92 words
An active laser medium consisting of the composition of trivalent neodymium and trivalent chromium in a single crystal body of anisotropic orthorhomic crystalline yttrium orthoaluminate enclosing a volume at least equal to 1 cubic centimeter and having a maximum dimension substantially greater than 1 centimeter, the neodymium being within the concentration range from 1 X 1019 ions per cubic centimeter to 2 X 1021 ions per cubic centimeter, and the chromium being within the concentration range from 1 X 105 ions per cubic centimeter to 1 X 1021 ions per cubic centimeter.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |