US3715682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rectangular disc laser
Assignee: American Optical Corp
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Filing: 1970-03-19
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Granted: 1973-02-06
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Expires: 1990-03-19
Abstract
Abstract A rectangular-disc laser structure of all-glass support construction. A segmented neodymium-doped glass laser rod is supported in a glass tubing and is designed to permit fluid coolant flow within the tubing and amongst the rod segments. The non-laserable glass supporting means consists of samarium-doped cladding glass to reduce interference by ''''off axis'''' spontaneously emitted light. The fluid coolant has an index of refraction which matches that of the laser glass to achieve a high efficiency. The absence of metallic supporting means minimizes the chance of metallic decomposition under the influence of pump light.
Inventors
- 👤 C Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:24
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/05; H01S3/06; H01S3/07; H01S3/02; H01S3/04; H01S3/042; H01S3/09; H01S3/091; H01S3/0915; H01S3/092; H01S3/093; H01S3/025; H01S3/0602; H01S3/0604
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
127 words
In an improved laser structure including linear glass tubing arranged to contain flow of a fluid, a segmented laser rod supported in said tubing, and laser pump means externally adjacent to said tubing for providing light energization to said laser rod, the improvement comprising said rod including a plurality of glass laser plates, each of said plates close fitted within said tubing and arranged to substantially span the hollow of said tubing, there being an aperture near an edge of each plate, said plates being substantially equally spaced from each other, sequential plate apertures arranged to cause oppositely directed flow of said fluid across the two faces of each of said plates to efficiently cool each of said plates, and said structure being constructed entirely of glass.
Claim 2
Dependent Claim
127 words
In an improved laser structure including linear glass tubing arranged to contain flow of a fluid, a segmented laser rod supported in said tubing, and laser pump means externally adjacent to said tubing for providing light energization to said laser rod, the improvement comprising said rod including a plurality of glass laser plates, each of said plates close fitted within said tubing and arranged to substantially span the hollow of said tubing, there being an aperture near an edge of each plate, said plates being substantially equally spaced from each other, sequential plate apertures arranged to cause oppositely directed flow of said fluid across the two faces of each of said plates to efficiently cool each of said plates, and said structure being constructed entirely of glass.
Claim 3
Dependent Claim
32 words
A laser structure as recited in claim 1 wherein each of said plates comprises a disc of laser glass and an apertured glass ring encompassing and supporting said disc within said tubing.
Claim 4
Dependent Claim
19 words
A laser structure as recited in claim 2 wherein both said glass ring and tubing are polygonal in cross-section.
Claim 5
Dependent Claim
18 words
A laser structure as recited in claim 2 wherein said disc of laser glass is of neodymium-doped glass.
Claim 6
Dependent Claim
15 words
A laser structure as recited in claim 3 wherein said ring is of samarium-doped glass.
Claim 7
Dependent Claim
15 words
A laser structure as recited in claim 1 wherein said tubing is of samarium-doped glass.
Claim 8
Dependent Claim
22 words
A laser structure as recited in claim 1 wherein said fluid is a liquid with an index of refraction of approximately 1.51.
Claim 9
Dependent Claim
65 words
A laser structure as recited in claim 2 wherein said ring is rectangular, and having a corner cut to permit flow of said fluid between opposite faces of each plate, there being glass spacers formed at corners adjacent said cut, said spacers arranged to provide uniform spacing between said plates, said plates supported in and aligned by said glass tubing along a common longitudinal axis.
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) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |