US4438514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sure-start waveguide laser
Assignee: Demaria Electrooptics Systems Inc
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Filing: 1982-02-16
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Granted: 1984-03-20
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Expires: 2002-02-16
Abstract
Abstract An RF-discharge waveguide laser having two parallel waveguides is improved by the addition of coupling channels which permit the plasma in said waveguides to communicate.
Inventors
- 👤 Peter P. Chenausky
- 👤 Leon A. Newman
- 👤 Erroll H. Drinkwater
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:53
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/02; H01S3/03; H01S3/0315; H01S3/05; H01S3/06; H01S3/07; H01S3/073; H01S3/076; H01S3/08; H01S3/081; H01S3/10; H01S3/105; H01S3/1055; H01S3/23; H01S3/2383
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
71 words
In an RF discharge waveguide laser including first and second RF electrodes; an insulating plate disposed between said first and second electrodes; a plurality of optical waveguides formed in said plate; means for resonating optical radiation within said plurality of optical waveguides; the improvement comprising: at least one coupling channel formed in said plate, said at least one coupling channel communicating between at least two of said plurality of optical waveguides.
Claim 2
Dependent Claim
71 words
In an RF discharge waveguide laser including first and second RF electrodes; an insulating plate disposed between said first and second electrodes; a plurality of optical waveguides formed in said plate; means for resonating optical radiation within said plurality of optical waveguides; the improvement comprising: at least one coupling channel formed in said plate, said at least one coupling channel communicating between at least two of said plurality of optical waveguides.
Claim 3
Dependent Claim
53 words
A laser according to claim 1 in which two of said plurality of optical waveguides are disposed within said plate parallel to one another and said at least one coupling channel is formed substantially at a right angle to said parallel waveguides whereby said optical radiation is substantially unaffected by said coupling channel.
Claim 4
Dependent Claim
40 words
A laser according to claim 2, in which each of said two of said plurality of waveguides has a first cross-sectional area and said at least one coupling channel has a second cross-sectional area greater than said first cross-sectional area.
Claim 5
Dependent Claim
46 words
A laser constructed according to claim 1 in which a pair of parallel optical waveguides are formed in said plate and a coupling channel extends from a first end of one of said waveguides diagonally to an opposite second end of the other of said waveguides.
References Cited (Backward Citations)
US3845409A
Cited
US3855547A
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US3982204A
Cited
US4158821A
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US4241319A
Cited
US4352188A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-20 | 1987-09-19 | 1988-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-20 | 1991-09-19 | 1992-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-20 | 1995-09-19 | 1996-03-20 | $7700.00 | Window Closed / Lapsed |