US3833862A
Expired / Lapsed
US
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Laser devices and compositions
Assignee: Lockheed Martin Corp
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Filing: 1970-05-22
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Granted: 1974-09-03
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Expires: 1990-05-22
Abstract
Abstract This invention relates to laser devices utilizing single crystals of an oxysulfide material as the active medium. More particularly, the host material is an oxysulfide of lanthanum, yttrium, gadolinium or lutetium and the activator ion is neodymium.
Inventors
- 👤 K Wickersheim
- 👤 R Buchanan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:12
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/77; C09K11/7766; C09K11/7767; C09K11/7769; C09K11/7771; C30; C30B; C30B11/00; C30B29/00; C30B29/10; C30B29/46; H; H01; H01S; H01S3/00; H01S3/14; H01S3/16
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
30 words
A single crystal laser material in accordance with claim 1 wherein from about 0.2 percent to 3 percent of the host metal ions have been replaced by travelent neodymium ions.
Claim 2
Dependent Claim
30 words
A single crystal laser material in accordance with claim 1 wherein from about 0.5 percent to 1.5 percent of the host metal ions have been replaced by trivalent neodymium ions.
Claim 3
Dependent Claim
66 words
In an laser device, a laser rod consisting essentially of at least one single crystal oxysulfide material selected from the group consisting of lanthanum oxysulfide, yttrium oxysulfide, gadolinium oxysulfide and lutetium oxysulfide in which from about 0.01 percent to 10 percent of the host metal ions have been replaced by trivalent neodymium ions and pumping means to establish the population inversion state necessary to laser action.
Claim 4
Dependent Claim
28 words
An laser device in accordance with claim 4 wherein from about 0.2 percent to 3 percent of the host metal ions have been replaced by trivalent neodymium ions.
Claim 5
Dependent Claim
28 words
An laser device in accordance with claim 4 wherein from about 0.5 percent to 1.5 percent of the host metal ions have been replaced by trivalent neodymium ions.
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) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |