Patent US3615312A successfully refreshed from Google Patents.
US3615312A
Expired / Lapsed
US
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End fusion of glass laser rods of dissimilar chemistry
Assignee: American Optical Corp
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Filing: 1969-04-21
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Granted: 1971-10-26
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Expires: 1989-04-21
Abstract
Abstract Method of operatively end fusing dissimilar rare earth oxide doped laser glass into an operatively unitary laser device, and product of the method.
Inventors
- 👤 Robert J Landry
- 👤 Amadee D Marino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:23
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/05; H01S3/06; H01S3/0602; H01S3/0612; C; C03; C03B; C03B23/00; C03B23/04; C03B23/047; C03B37/00; C03B37/01; C03B37/012; C03B37/01205; C03B37/01211
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
8 words
The product of the method in claim 1.
Claim 2
Dependent Claim
39 words
The process of claim 1 which the pieces consist of a pair of laser rods, the second of which is erbium doped and the first of which is neodymium doped and in which the cladding is likewise neodymium doped.
Claim 3
Dependent Claim
14 words
The method of claim 1 in which the pieces are of circular cross section.
Claim 4
Dependent Claim
21 words
The method of claim 4 in which the cladding material is initially a neodymium doped open-ended cylinder of circular cross section.
Claim 5
Dependent Claim
25 words
The method of claim 1 in which the second piece is erbium doped, and the First is neodymium doped and the cladding is neodymium-ytterbium doped.
Claim 6
Dependent Claim
26 words
The method of claim 1 in which the unitary laser structure is subjected to a second drawing step for at least a portion of its length.
Claim 7
Dependent Claim
57 words
The method of claim 7 in which there are two pieces, the second piece being erbium doped and the first neodymium doped, the cladding also being neodymium doped, and in which the unitary laser structure is subjected to a second drawing step but for less than the portion of its length comprised of the first doped piece.
Claim 8
Dependent Claim
54 words
The method of claim 1 in which said pieces are separate rod elements and in which the external surfaces of said rods are polished, and abutting ends thereof being polished and parallel, inserting said rods into a separate cylinder of laser-rod-cladding material, respective adjacent ends of the plurality of rods contiguously abutting each other.
References Cited (Backward Citations)
US1793529A
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US2313296A
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US2992517A
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US3037241A
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US3193364A
Cited
US3278283A
Cited
US3449036A
Cited
US3455667A
Cited
US3483072A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |