Patent US5088102A successfully refreshed from Google Patents.
US5088102A
Expired / Lapsed
US
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Co or co2 waveguide laser
Assignee: Siemens AG
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Filing: 1991-02-22
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Granted: 1992-02-11
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Expires: 2011-02-22
Abstract
Abstract In a CO or CO 2 waveguide laser of the sealed-off type having transversal excitation, an enhancement of the useful life is achieved in that the electrodes 1 and 2 of metal that serve as waveguiding surfaces are coated with a layer insensitive to oxidation by the adjoining plasma and which has a roughness that is adequately low for the waveguiding. The invention can be particularly advantageously utilized for CO 2 ribbon conductor or stripline lasers.
Inventors
- 👤 Hans Krueger
- 👤 Hubert Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:52
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/02; H01S3/03; H01S3/0315; H01S3/038; H01S3/0388
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
70 words
A transversal excitation sealed-off type CO or CO 2 waveguide laser, comprising: two metal electrodes arranged as waveguide surfaces and separated from one another by insulator strips; the electrodes being coated with a passivation layer means which is insensitive to oxidation by an adjoining plasma within the laser; and said layer means having a roughness which is sufficiently small such that it does not substantially disturb waveguiding in the laser.
Claim 2
Dependent Claim
70 words
A transversal excitation sealed-off type CO or CO 2 waveguide laser, comprising: two metal electrodes arranged as waveguide surfaces and separated from one another by insulator strips; the electrodes being coated with a passivation layer means which is insensitive to oxidation by an adjoining plasma within the laser; and said layer means having a roughness which is sufficiently small such that it does not substantially disturb waveguiding in the laser.
Claim 3
Dependent Claim
28 words
A waveguide laser according to claim 1 wherein the layer means coating the electrodes has a passivated material selected from the group consisting of Al, Cr, and Ni.
Claim 4
Dependent Claim
16 words
A waveguide laser according to claim 2 wherein the layer means comprises a highest grade aluminum.
Claim 5
Dependent Claim
40 words
A waveguide laser according to claim 3 wherein the electrodes comprise aluminum and the layer means comprises aluminum oxide which is smoothed, and wherein the aluminum oxide is a layer having a thickness of no greater than approximately 1 μm.
Claim 6
Dependent Claim
30 words
A waveguide laser according to claim 1 wherein the layer means coating the electrodes comprises a material selected from the group of precious metals consisting of gold, Pt, and Pd.
Claim 7
Dependent Claim
13 words
A waveguide laser according to claim 1 wherein the electrodes comprise passivated copper.
Claim 8
Dependent Claim
13 words
A waveguide laser according to claim 1 wherein the electrodes comprise passivated aluminum.
Claim 9
Dependent Claim
51 words
A waveguide laser according to claim 1 wherein the electrodes comprise an aluminum alloy, at least one layer of nickel is applied thereon, and a layer of highest grade aluminum being applied on the nickel layer, and the highest grade aluminum being coated with a passivation layer on its exposed surface.
Claim 10
Dependent Claim
16 words
A waveguide laser according to claim 1 wherein the laser is designed as a slab-type laser.
Claim 11
Dependent Claim
20 words
A waveguide laser according to claim 1 wherein the laser is designed as a ribbon conductor or stripline type laser.
Claim 12
Dependent Claim
39 words
A waveguide laser according to claim 1 wherein the insulator strips comprise ceramic strips soldered in between the coated electrodes, the ceramic strips being dimensioned to define a limitation of the plasma space and as spacers for the electrodes.
Claim 13
Dependent Claim
62 words
A CO waveguide laser, comprising: two metal electrodes arranged as waveguide surfaces and separated from one another by insulators; the electrodes being coated with a passivation layer means which is insensitive to oxidation by an adjoining plasma within the laser; and said layer means having a roughness which is sufficiently small such that it does not substantially disturb waveguiding in the laser.
Claim 14
Dependent Claim
62 words
A CO waveguide laser, comprising: two metal electrodes arranged as waveguide surfaces and separated from one another by insulators; the electrodes being coated with a passivation layer means which is insensitive to oxidation by an adjoining plasma within the laser; and said layer means having a roughness which is sufficiently small such that it does not substantially disturb waveguiding in the laser.
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) | 1995-02-10 | 1995-08-12 | 1996-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-10 | 1999-08-12 | 2000-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-10 | 2003-08-12 | 2004-02-11 | $7700.00 | Window Closed / Lapsed |