US3972007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser
Assignee: Lockheed Martin Corp
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Filing: 1974-04-29
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Granted: 1976-07-27
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Expires: 1994-04-29
Abstract
Abstract A room temperature opticaly pumped solid state laser operating in the 0.8 to 0.9 micron region with inherently low beam divergence enchances covert laser systems because of compatability with high quantum efficiency low noise photocathodes.
Inventors
- 👤 Charles S. Naiman
- 👤 E. P. Chicklis
- 👤 Arthur Linz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:59
CPC Classifications
G; G01; G01S; G01S17/00; G01S17/02; G02; G02B; G02B23/00; G02B23/12; H; H01; H01S; H01S3/00; H01S3/14; H01S3/16
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
38 words
A laser which operates at room temperature comprising: a laser rod having strong fluorescence in the 0.85 um region; a flashlamp optically coupled to said laser rod; means for supplying electrical power to said flashlamp; and a cavity.
Claim 2
Dependent Claim
38 words
A laser which operates at room temperature comprising: a laser rod having strong fluorescence in the 0.85 um region; a flashlamp optically coupled to said laser rod; means for supplying electrical power to said flashlamp; and a cavity.
Claim 3
Dependent Claim
14 words
The laser of claim 1 wherein said rod is erbium doped lithium yttrium fluoride.
Claim 4
Dependent Claim
24 words
The laser of claim 2 wherein said rod is co-doped with an ion selected from the group consisting of terbium, thulium dysprosium, and holmium.
Claim 5
Dependent Claim
38 words
A laser, comprising: a laser rod aligned within a resonant cavity; said rod comprising a host material of lithium yttrium fluoride and active laser ions of erbium; and means for supplying pumping light energy to said laser rod.
Claim 6
Dependent Claim
38 words
A laser, comprising: a laser rod aligned within a resonant cavity; said rod comprising a host material of lithium yttrium fluoride and active laser ions of erbium; and means for supplying pumping light energy to said laser rod.
Claim 7
Dependent Claim
27 words
The laser of claim 4 wherein said pumping means includes a flashlamp optically coupled to said laser rod, and means for supplying electrical power to said flashlamp.
References Cited (Backward Citations)
US3675155A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-27 | 1980-01-26 | 1980-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-27 | 1984-01-26 | 1984-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-27 | 1988-01-26 | 1988-07-27 | $7700.00 | Window Closed / Lapsed |