Patent US3684980A successfully refreshed from Google Patents.
US3684980A
Expired / Lapsed
US
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High effective absorption coefficient solid state laser rods
Assignee: Texas Instruments Inc
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Filing: 1970-10-13
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Granted: 1972-08-15
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Expires: 1990-10-13
Abstract
Abstract The effective absorption coefficient of solid state laser rod is increased by selectively coating the longitudinal surface of the laser rod or the rod cladding with a highly light reflective layer such that substantial portions of the light which passes unabsorbed through the rod is reflected back into the rod.
Inventors
- 👤 David Blair Kay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:41
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/05; H01S3/06; H01S3/0602; H01S3/0612; H01S3/09; H01S3/091; H01S3/0915; H01S3/0933; H01S3/02; H01S3/025; H01S3/061; H01S3/094; H01S3/094084
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
15 words
A solid state laser rod in accordance with claim 1 wherein said rod is YAG.
Claim 2
Dependent Claim
43 words
A solid state laser rod in accordance with claim 1 wherein the rod has been grooved along said exposed portion thereby permitting light emitting diodes to be mounted such that there is a minumum of light scattering before said light enters said rod.
Claim 3
Dependent Claim
33 words
A solid state laser rod in accordance with claim 1 wherein said highly light reflective coating is covered with a second coating, said second coating providing environmental protection for sAid highly reflective layer.
Claim 4
Dependent Claim
15 words
A solid state laser rod in accordance with claim 1 wherein said groove is V-shaped.
Claim 5
Dependent Claim
15 words
A solid state laser rod in accordance with claim 1 wherein said groove is semi-circular.
Claim 6
Dependent Claim
72 words
A laser rod assembly comprising in combination a. a laser rod and cladding mounted concentrically therewith, said laser rod and cladding being substantially equal in length and having first and second substantially parallel ends, and b. a light reflective coating selectively covering first portions of the outer surface of said cladding while second portions of said cladding are exposed, said covered and exposed areas substantially extending the entire length of said cladding.
Claim 7
Dependent Claim
16 words
A laser rod assembly in accordance with claim 7, wherein said highly reflective layer is silver.
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) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |