US3683296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High efficiency laser cavity
Assignee: Texas Instruments Inc
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Filing: 1970-10-13
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Granted: 1972-08-08
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Expires: 1990-10-13
Abstract
Abstract A plurality of structural members form a laser cavity structure which has an inner cylindrical surface in which grooves have been formed for mounting light emitters. Other portions of the inner surface of the cavity are coated with a highly light reflective layer. Selected portions of the cavity wall contact the laser rod assembly which is positioned within the cavity and can be used as a heat sink for both the light emitter arrays and the laser rod assembly. Additional cooling for tubular laser rods is provided by a rod-like heat sink mounted concentric with the tubular rod.
Inventors
- 👤 Stanley J Scalise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:27
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/05; H01S3/06; H01S3/0602; H01S3/0612; H01S3/02; H01S3/04; H01S3/042; H01S3/09; H01S3/091; H01S3/0915; H01S3/0933; H01S3/025; H01S3/0405; H01S3/0608; H01S3/061; H01S3/094; H01S3/094084
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
80 words
A laser rod assembly comprising a tubular laser rod having cylindrical inner and outer surfaces and a heat sink, said heat sink having a rod-like surface concentrically positioned with respect to and in low thermal resistance contact with said inner cylindrical surface of said laser rod and a base portion, said base portion including means for securing said base portion to a mounting structure such that heat is readily transferred by conduction from said base portion to said mounting structure.
Claim 2
Dependent Claim
80 words
A laser rod assembly comprising a tubular laser rod having cylindrical inner and outer surfaces and a heat sink, said heat sink having a rod-like surface concentrically positioned with respect to and in low thermal resistance contact with said inner cylindrical surface of said laser rod and a base portion, said base portion including means for securing said base portion to a mounting structure such that heat is readily transferred by conduction from said base portion to said mounting structure.
Claim 3
Dependent Claim
96 words
A laser rod assembly including a tubular laser rod and a heat sink, said heat sink comprising first and second concentrically positioned tubular portions, said second tubular portion having an outer radius less than the inner radius of said first tubular portion, said first tubular portion being positioned concentrically with respect to said laser rod, the outer surface of said first tubular portion being in low thermal resistance contact with the inner surface of said tubular laser rod, and means for circulating a coolant through said first and second tubular portions thereby cooling said laser rod.
Claim 4
Dependent Claim
96 words
A laser rod assembly including a tubular laser rod and a heat sink, said heat sink comprising first and second concentrically positioned tubular portions, said second tubular portion having an outer radius less than the inner radius of said first tubular portion, said first tubular portion being positioned concentrically with respect to said laser rod, the outer surface of said first tubular portion being in low thermal resistance contact with the inner surface of said tubular laser rod, and means for circulating a coolant through said first and second tubular portions thereby cooling said laser rod.
Claim 5
Dependent Claim
100 words
A laser structure comprising, a cylindrical laser rod assembly having at least one groove along its outer surface, at least one member having an inner surface shaped to substantially conform to the non-grooved portion of the outer surface of said laser rod assembly, said inner surface being in contact with and supporting said laser rod assembly, said one member having a groove for mounting a light source such that the light emitting surface of said light source will be positioned within said groove in said laser rod assembly, and an array of solid state light emitters mounted in said groove.
Claim 6
Dependent Claim
100 words
A laser structure comprising, a cylindrical laser rod assembly having at least one groove along its outer surface, at least one member having an inner surface shaped to substantially conform to the non-grooved portion of the outer surface of said laser rod assembly, said inner surface being in contact with and supporting said laser rod assembly, said one member having a groove for mounting a light source such that the light emitting surface of said light source will be positioned within said groove in said laser rod assembly, and an array of solid state light emitters mounted in said groove.
Claim 7
Dependent Claim
21 words
A laser structure in accordance with claim 3 wherein the inner surface of said at least one member is light reflecting.
Claim 8
Dependent Claim
37 words
A laser structure in accordance with claim 3 wherein said at least one member is in low thermal resistance contact with said laser rod assembly and serves as a heat sink for cooling said laser rod assembly.
Claim 9
Dependent Claim
26 words
A laser structure in accordance with claim 3 wherein said laser rod assembly includes a laser rod and a cladding mounted concentric with said laser rod.
Claim 10
Dependent Claim
22 words
A laser structure in accordance with claim 3 wherein said solid state light emitters are an array of semiconductor light emitting diodes.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |