Patent US5521934A successfully refreshed from Google Patents.
US5521934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Materials for II-VI lasers
Assignee: Philips North America LLC
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Filing: 1994-11-22
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Granted: 1996-05-28
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Expires: 2014-11-22
Abstract
Abstract A material for use in a laser heterostructure which is lattice matched material to ZnSe and has a high band gap. The material is Mgy Zn1-y Sx Se1-x with the ratio of sulphur to magnesium of 0.28/0.19. Lasing devices constructed from layers of this material and ZnSe can be either electron beam pumped or electrically driven.
Inventors
- 👤 Brian J. Fitzpatrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:45
CPC Classifications
H; H01; H01S; H01S5/00; H01S5/30; H01S5/32; H01S5/327; H01S3/00; H01S3/09; H01S3/0955; H01S3/0959; H01S5/04; H01S5/10; H01S5/18; H01S5/183
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
57 words
A structure for a lasing device comprising at least one layer of ZnSe and at least one layer of Mg y Zn 1-y S x Se 1-x , at least one of said layers of Mg y Zn 1-y S x Se 1-x being in contact, and lattice matched to, said at least one layer of ZnSe.
Claim 2
Dependent Claim
57 words
A structure for a lasing device comprising at least one layer of ZnSe and at least one layer of Mg y Zn 1-y S x Se 1-x , at least one of said layers of Mg y Zn 1-y S x Se 1-x being in contact, and lattice matched to, said at least one layer of ZnSe.
Claim 3
Dependent Claim
20 words
The structure for a laser as claimed in claim 1 wherein the amount of magnesium is less than 15 percent.
Claim 4
Dependent Claim
23 words
The structure as claimed in claim 1 wherein the amount of magnesium is 7 percent and the amount of sulphur is 5 percent.
Claim 5
Dependent Claim
15 words
The structure as claimed in claim 1 wherein the amount of magnesium is 14 percent.
Claim 6
Dependent Claim
15 words
The structure as claimed in claim 1 wherein said layers are disposed on a substrate.
Claim 7
Dependent Claim
20 words
The structure as claimed in claim 1 further including at least one partially reflecting mirror and a totally reflecting mirror.
Claim 8
Dependent Claim
42 words
The structure as claimed in claim 1 wherein each surface of at least one of said layers of ZnSe is in contact with, and is lattice matched to, one of said layers of Zn y Mg 1-y S x Se 1-x .
Claim 9
Dependent Claim
16 words
The structure as claimed in claim 1 wherein the ratio of Mg to S is 0.26/0.19.
Claim 10
Dependent Claim
12 words
The structure as claimed in claim 1 wherein multiple layers are present.
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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) | 1999-05-28 | 1999-11-27 | 2000-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-05-28 | 2003-11-27 | 2004-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-05-28 | 2007-11-27 | 2008-05-28 | $7700.00 | Window Closed / Lapsed |