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US3866142A
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Doped beryllium lanthanate crystals
Assignee: Honeywell International Inc
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Filing: 1973-12-06
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Granted: 1975-02-11
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Expires: 1993-12-06
Abstract
Abstract Novel single crystals of doped beryllium lanthanate having up to 50 atomic percent dopant substituted for lanthanum are provided which find advantageous use in optical applications and, in particular, as laser hosts.
Inventors
- 👤 Carl F Cline
- 👤 Robert C Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:05
CPC Classifications
C; C30; C30B; C30B29/00; C30B29/10; C30B29/16; C30B29/22; C30B11/00; C30B11/04; C30B11/08; C30B11/10; C30B15/00; H; H01; H01S; H01S3/00; H01S3/14; H01S3/16; H01S3/163; H01S3/1663; H01S3/1665
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
77 words
A LASER COMPRISING: A. A LASER HOST COMPRISING AT LEAST ONE SINGLE CRYSTAL OF DOPED BERYLLIUM LANTHANATE HAVING THE FORMULS BE2LA2-2XZ2X05, WHEREIN Z IS A DOPANT SELECTED FROM THE GROUP CONSISTING OF PRASEODYMIUM, NEODYMIUM, SAMARIUM, EUROPIUM, GADOLINIUM, TERBIUM, DYSPROSIUM, HOLMIUM, ERBIUM, THULIUM, YTTERBIUM, AND MIXTURES THEREOF AND WHEREIN X IS A POSITIVE VALUE NOT GREATER THAN ABOUT 0.2; AND B. MEANS FOR EXCITING SAID DOPANT ATOMS CONTAINED IN SAID CRYSTAL TO CAUSE SAID ATOMS TO EMIT RADIATION.
Claim 2
Dependent Claim
77 words
A LASER COMPRISING: A. A LASER HOST COMPRISING AT LEAST ONE SINGLE CRYSTAL OF DOPED BERYLLIUM LANTHANATE HAVING THE FORMULS BE2LA2-2XZ2X05, WHEREIN Z IS A DOPANT SELECTED FROM THE GROUP CONSISTING OF PRASEODYMIUM, NEODYMIUM, SAMARIUM, EUROPIUM, GADOLINIUM, TERBIUM, DYSPROSIUM, HOLMIUM, ERBIUM, THULIUM, YTTERBIUM, AND MIXTURES THEREOF AND WHEREIN X IS A POSITIVE VALUE NOT GREATER THAN ABOUT 0.2; AND B. MEANS FOR EXCITING SAID DOPANT ATOMS CONTAINED IN SAID CRYSTAL TO CAUSE SAID ATOMS TO EMIT RADIATION.
Claim 3
Dependent Claim
21 words
A laser as defined in claim 1 wherein said means for exciting the dopant atoms comprises a gaseous discharge pumping source.
Claim 4
Dependent Claim
22 words
A laser as defined in claim 1 wherein said dopant is selected from the group consisting of neodymium, europium, dysprosium and holmium.
Claim 5
Dependent Claim
15 words
A laser as defined in claim 1 wherein x is from about 0.001 to 0.2.
References Cited (Backward Citations)
US3289100A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-10 | 1978-08-12 | 1979-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-10 | 1982-08-12 | 1983-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-10 | 1986-08-12 | 1987-02-11 | $7700.00 | Window Closed / Lapsed |