US4259645A
Expired / Lapsed
US
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High energy XeBr electric discharge laser
Assignee: United States Department of Energy
•
Filing: 1979-04-10
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Granted: 1981-03-31
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Expires: 1999-04-10
Abstract
Abstract A high energy XeBr laser for producing coherent radiation at 282 nm. The XeBr laser utilizes an electric discharge as the excitation source to minimize formation of molecular ions thereby minimizing absorption of laser radiation by the active medium. Additionally, HBr is used as the halogen donor which undergoes harpooning reactions with Xe M * to form XeBr*.
Inventors
- 👤 Robert C. Sze
- 👤 Peter B. Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:13
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/14; H01S3/22; H01S3/223; H01S3/225
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
8 words
In an XeBr excimer laser, the improvement comprising:
Claim 2
Dependent Claim
8 words
In an XeBr excimer laser, the improvement comprising:
Claim 3
Dependent Claim
37 words
a XeBr lasing medium including HBr as a bromine donor; electric discharge means for exciting said lasing medium to minimize the formation of molecular ions such that high output energies are produced by said XeBr excimer laser.
Claim 4
Dependent Claim
37 words
a XeBr lasing medium including HBr as a bromine donor; electric discharge means for exciting said lasing medium to minimize the formation of molecular ions such that high output energies are produced by said XeBr excimer laser.
Claim 5
Dependent Claim
16 words
The laser of claim 1 wherein said lasing medium comprises: ˜0.1% HBr ˜5% Xe ˜94.9% He
Claim 6
Dependent Claim
16 words
The laser of claim 1 wherein said lasing medium comprises: ˜0.1% HBr ˜5% Xe ˜94.9% Ne
Claim 7
Dependent Claim
27 words
The laser of claim 1 wherein said electrical discharge means comprises a cable fed discharge system which produces a fast current risetime pulse in said lasing medium.
Claim 8
Dependent Claim
67 words
A high energy XrBr noble gas monohalide excimer laser comprising: an optical resonant cavity; a XeBr lasing medium containing HBr as a halogen donor, said XeBr lasing medium disposed within said optical resonant cavity; electrical discharge means for exciting said lasing medium to stimulate laser emission of XeBr and minimize formation of molecular ions in said lasing medium and thereby minimize energy absorption by said lasing medium.
Claim 9
Dependent Claim
67 words
A high energy XrBr noble gas monohalide excimer laser comprising: an optical resonant cavity; a XeBr lasing medium containing HBr as a halogen donor, said XeBr lasing medium disposed within said optical resonant cavity; electrical discharge means for exciting said lasing medium to stimulate laser emission of XeBr and minimize formation of molecular ions in said lasing medium and thereby minimize energy absorption by said lasing medium.
Claim 10
Dependent Claim
15 words
The laser of claim 5 wherein said XeBr lasing medium comprises HBr, Xe and He.
Claim 11
Dependent Claim
15 words
The laser of claim 5 wherein said XeBr lasing medium comprises HBr, Xe and Ne.
Claim 12
Dependent Claim
16 words
The laser of claim 5 wherein said electrical discharge means comprise a cable fed discharge system.
Claim 13
Dependent Claim
68 words
A high energy XeBr noble gas mnohalide excimer laser comprising: an optical resonant cavity delimited by an energy abstracting means, a XeBr lasing medium containing HBr as a halogen donor, said XeBr lasing medium disposed within said optical resonant cavity; electrical discharge means for exciting said lasing medium to generate Xe M * to form XeBr* according to the reaction: Xe M *+HBr→XeBr*+H, wherein M denotes metastable Xenon.
Claim 14
Dependent Claim
68 words
A high energy XeBr noble gas mnohalide excimer laser comprising: an optical resonant cavity delimited by an energy abstracting means, a XeBr lasing medium containing HBr as a halogen donor, said XeBr lasing medium disposed within said optical resonant cavity; electrical discharge means for exciting said lasing medium to generate Xe M * to form XeBr* according to the reaction: Xe M *+HBr→XeBr*+H, wherein M denotes metastable Xenon.
Claim 15
Dependent Claim
15 words
The laser of claim 9 wherein said XeBr lasing medium comprises HBr, Xe and He.
Claim 16
Dependent Claim
15 words
The laser of claim 9 wherein said XeBr lasing medium comprises HBr, Xe and Ne.
References Cited (Backward Citations)
US3991385A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-30 | 1984-09-29 | 1985-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-30 | 1988-09-29 | 1989-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-30 | 1992-09-29 | 1993-03-31 | $7700.00 | Window Closed / Lapsed |