US5394422A
Expired / Lapsed
US
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Materials for II-VI lasers
Assignee: Philips North America LLC
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Filing: 1993-09-14
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Granted: 1995-02-28
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Expires: 2013-09-14
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 Mg y Zn 1-y S x Se 1-x with the ratio of sulphur to magnesium of 0.26/0.19. 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 09:53
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: 24
Claim 1
Independent Claim
37 words
A light emitting device comprising at least one layer of ZnSe and at least one layer of Mg y Zn 1-y S x Se 1-x wherein y=0.07-0.14 and wherein the ratio of y to x is 26/19.
Claim 2
Dependent Claim
37 words
A light emitting device comprising at least one layer of ZnSe and at least one layer of Mg y Zn 1-y S x Se 1-x wherein y=0.07-0.14 and wherein the ratio of y to x is 26/19.
Claim 3
Dependent Claim
23 words
The device as claimed in claim 1 wherein the amount of magnesium is 7 percent and the amount of sulphur is 5 percent.
Claim 4
Dependent Claim
13 words
The device as claimed in claim 1 wherein the structure comprises multiple layers.
Claim 5
Dependent Claim
15 words
The device as claimed in claim 1 wherein the amount of magnesium is 14 percent.
Claim 6
Dependent Claim
15 words
The device 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
51 words
In a device having a light emitting layer of ZnSe the improvement comprising at least one layer of Mg y Zn 1-y S x Se 1-x disposed proximate said layer of ZnSe wherein the amount of Mg is between 0.07 and 0.14 and the ratio of y to x is 26/19.
Claim 9
Dependent Claim
51 words
In a device having a light emitting layer of ZnSe the improvement comprising at least one layer of Mg y Zn 1-y S x Se 1-x disposed proximate said layer of ZnSe wherein the amount of Mg is between 0.07 and 0.14 and the ratio of y to x is 26/19.
Claim 10
Dependent Claim
13 words
The device as claimed in claim 7 wherein said y value is 0.07.
Claim 11
Dependent Claim
29 words
The device as claimed in claim 7 wherein a layer of Mg y Zn 1-y S x Se 1-x is disposed on each side of said layer of ZnSe.
Claim 12
Dependent Claim
28 words
The device as claimed in claim 9 wherein said layers of Mg y Zn 1-y S x Se 1-x have differing indexes of refraction from said ZnSe layer.
Claim 13
Dependent Claim
28 words
The device as claimed in claim 9 wherein said layers of Mg y Zn 1-y S x Se 1-x have different band gaps from said layer of ZnSe.
Claim 14
Dependent Claim
26 words
The device as claimed in claim 7 wherein said layers of Mg y Zn 1-y S x Se 1-x and ZnSe are deposited on a substrate.
Claim 15
Dependent Claim
12 words
The device as claimed in claim 12 wherein said substrate comprises ZnSe.
Claim 16
Dependent Claim
38 words
A light emitting device comprising a light emitting layer of II-VI material and at least one layer of Mg y Zn 1-y S x Se 1-x wherein the ratio of y to x is 26/19 and wherein y=0.07-0.14.
Claim 17
Dependent Claim
38 words
A light emitting device comprising a light emitting layer of II-VI material and at least one layer of Mg y Zn 1-y S x Se 1-x wherein the ratio of y to x is 26/19 and wherein y=0.07-0.14.
Claim 18
Dependent Claim
14 words
The device as claimed in claim 14 wherein the light emitting layer comprises ZnSe.
Claim 19
Dependent Claim
13 words
The device as claimed in claim 14 wherein said y value is 0.07.
Claim 20
Dependent Claim
29 words
The device as claimed in claim 14 wherein a layer of Mg y Zn 1-y S x Se 1-x is disposed on each side of the light emitting layer.
Claim 21
Dependent Claim
29 words
The device as claimed in claim 17 wherein said layers of Mg y Zn 1-y S x Se 1-x have differing indexes of refraction from said light emitting layer.
Claim 22
Dependent Claim
28 words
The device as claimed in claim 14 wherein the layers of Mg y Zn 1-y S x Se 1-x have differing band gaps from said light emitting layer.
Claim 23
Dependent Claim
30 words
The device as claimed in claim 17 wherein said layers of Mg y Zn 1-y S x Se 1-x and said light emitting layers are disposed on a substrate material.
Claim 24
Dependent Claim
12 words
The device as claimed in claim 20 wherein the substrate comprises ZnSe.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-02-27 | 1998-08-29 | 1999-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-02-27 | 2002-08-29 | 2003-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-02-27 | 2006-08-29 | 2007-02-28 | $7700.00 | Window Closed / Lapsed |