US4507787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Segmented YAG laser rods and methods of manufacture
Assignee: JPMorgan Chase Bank NA
•
Filing: 1982-09-28
•
Granted: 1985-03-26
•
Expires: 2002-09-28
Abstract
Abstract The disclosure is of a segmented YAG laser rod having segments cemented together and its method of manufacture.
Inventors
- 👤 Richard T. Daly
- 👤 Martin G. Cohen
- 👤 Binod Kumar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:36
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/14; H01S3/16; H01S3/05; H01S3/06; H01S3/07; H01S3/0602; H01S3/061; H01S3/0612; H01S3/1601; H01S3/1603; H01S3/1611; H01S3/163; H01S3/164; H01S3/1643
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
78 words
A laser rod, which comprises a plurality of rod segments joined to each other by an optical glass cement, the cement being selected to have its index of refraction and thermal coefficient of expansion matching that of the segments, the cement being non-solarizing and optically linear and non-absorbing at laser wavelengths during laser dynamic conditions, the cement having bond strength capable of withstanding use under static and dynamic conditions and being chemically compatible with the rod segment material.
Claim 2
Dependent Claim
78 words
A laser rod, which comprises a plurality of rod segments joined to each other by an optical glass cement, the cement being selected to have its index of refraction and thermal coefficient of expansion matching that of the segments, the cement being non-solarizing and optically linear and non-absorbing at laser wavelengths during laser dynamic conditions, the cement having bond strength capable of withstanding use under static and dynamic conditions and being chemically compatible with the rod segment material.
Claim 3
Dependent Claim
21 words
The rod of claim 1, which comprises a plurality of YAG segments joined to each other by an optical glass cement.
Claim 4
Dependent Claim
16 words
The rod of claim 1, wherein the segments are YAG doped with a rare earth element.
Claim 5
Dependent Claim
32 words
The rod of claim 1, wherein the optical glass cement approximates a composition of the formula: ______________________________________
PERCENT BY WEIGHT
______________________________________
PbO 70
B.sub.2 O.sub.3
4
SiO.sub.2 22
Al.sub.2 O.sub.3
4
______________________________________
Claim 6
Dependent Claim
14 words
The invention in accordance with claim 1, wherein the cement is insoluble in water.
Claim 7
Dependent Claim
23 words
An optical glass composition of the formula: ______________________________________
PERCENT BY WEIGHT
______________________________________
PbO 70
B.sub.2 O.sub.3
4
SiO.sub.2 22
Al.sub.2 O.sub.3
4
______________________________________
Claim 8
Dependent Claim
23 words
An optical glass composition of the formula: ______________________________________
PERCENT BY WEIGHT
______________________________________
PbO 70
B.sub.2 O.sub.3
4
SiO.sub.2 22
Al.sub.2 O.sub.3
4
______________________________________
Claim 9
Independent Claim
39 words
A method of manufacturing a segmented laser rod which comprises: providing a plurality of shaped segments for assembly into a segmented laser rod; assembling the segments into a laser rod; and adhering adjacent segments together with an optical cement.
Claim 10
Independent Claim
39 words
A method of manufacturing a segmented laser rod which comprises: providing a plurality of shaped segments for assembly into a segmented laser rod; assembling the segments into a laser rod; and adhering adjacent segments together with an optical cement.
Claim 11
Dependent Claim
14 words
The invention in accordance with claim 7, wherein the segments are doped YAG material.
References Cited (Backward Citations)
US4163200A
Cited
US4380077A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-03-25 | 1988-09-24 | 1989-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-25 | 1992-09-24 | 1993-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-25 | 1996-09-24 | 1997-03-26 | $7700.00 | Window Closed / Lapsed |