US3219585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diffusion technique for making composite optical maser crystals
Assignee: AT&T Inc
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Filing: 1961-10-31
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Granted: 1965-11-23
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Expires: 1981-10-31
Abstract
No abstract record available.
Inventors
- 👤 Wolfgang K Kaiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:53
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/05; H01S3/06; H01S3/0602; H01S3/061; H01S3/0612
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A METHOD FOR MAKING A COMPOSITE CRYSTAL ROD OF CALCIUM FLUORIDE HAVING AN ACTIVE LASER CYLINDRICAL INNER PORTION DROPPED WITH SM+2 AND AN INACTIVE CONCENTRIC EXTERIOR SHELL PORTION DOPED WITH SM+3 WHICH IS TRANSPARENT TO RADIATION WITH WHICH THE LASER MATERIAL IS PUMPED WHICH COMPRISES CHEMICALLY CONVERTING THE SAMARIUM IN THE SAID EXTERIOR SHELL PORTION OF THE CRYSTAL ROD FROM A +2 VALENCE STATE EXHIBITING THE DESIRED LASER ABSORPTION TO A +3 VALENCE STATE WHICH IS ESSENTIALLY TRANSPARENT TO THE SAID PUMPING RADIATION BY DIFFUSING HF INTO THE CYLINDRICAL SURFACE OF THE CRYSTAL ROD AND CONTINUING THE DIFFUSION UNTIL THE DESIRED OUTER PORTION IS SUBSTANTIALLY CONVERTED.
Claim 2
Independent Claim
106 words
A METHOD FOR MAKING A COMPOSITE CRYSTAL ROD OF CALCIUM FLUORIDE HAVING AN ACTIVE LASER CYLINDRICAL INNER PORTION DROPPED WITH SM+2 AND AN INACTIVE CONCENTRIC EXTERIOR SHELL PORTION DOPED WITH SM+3 WHICH IS TRANSPARENT TO RADIATION WITH WHICH THE LASER MATERIAL IS PUMPED WHICH COMPRISES CHEMICALLY CONVERTING THE SAMARIUM IN THE SAID EXTERIOR SHELL PORTION OF THE CRYSTAL ROD FROM A +2 VALENCE STATE EXHIBITING THE DESIRED LASER ABSORPTION TO A +3 VALENCE STATE WHICH IS ESSENTIALLY TRANSPARENT TO THE SAID PUMPING RADIATION BY DIFFUSING HF INTO THE CYLINDRICAL SURFACE OF THE CRYSTAL ROD AND CONTINUING THE DIFFUSION UNTIL THE DESIRED OUTER PORTION IS SUBSTANTIALLY CONVERTED.
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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |