US3813612A
Expired / Lapsed
US
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Method and apparatus for enhancing electrical discharges in gas lasers
Assignee: United States Atomic Energy Commission
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Filing: 1973-01-18
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Granted: 1974-05-28
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Expires: 1993-01-18
Abstract
Abstract A method and apparatus for enhancing electrical discharges in gas lasers by adding small amounts of a low ionization potential gas to the main lasing gas mixture. The additive does two things: (1) allows a d.c. high pressure discharge, and (2) allows enhanced pulsed operation (i.e., double discharge). The enhancement method is particularly applicable to double discharge gas lasers utilizing gaseous lasing mixture of He/N2/CO2, for example, at atmospheric pressures, wherein the addition of an organic gas additive to the lasing mixture suppresses arcing and increases current. The method is carried out by metering small amounts of the additive into a flowing stream of lasing gaseous media, or by addition of the additive gas to a static volume of lasing gas.
Inventors
- 👤 R Schriever
- 👤 H Johansen
- 👤 R Sandy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:42
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/14; H01S3/22; H01S3/223; H01S3/2232; H01S3/09; H01S3/097; H01S3/0971; H01S3/09713; H01S3/09716
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
49 words
The method defined in claim 1, wherein the step of adding the organic material gas to the lasing medium is carried out by bubbling at least a portion of the lasing medium through a quantity of low ionization potential gas whereby the gas is mixed with the lasing medium.
Claim 2
Dependent Claim
49 words
The method defined in claim 1, additionally including the step of producing the lasing gaseous medium by supplying a plurality of selected gases to a common point, mixing the thus selected gases and the added low ionization potential organic material gas, and directing the mixture into the laser cavity.
Claim 3
Independent Claim
77 words
An apparatus for suppressing arcing and increasing current in a gas laser activated by an electrical discharge across lasing medium contained within a vessel comprising: means for directing a gaseous lasing medium through said vessel of said gas laser, means for supplying said gaseous lasing medium to said first-mentioned means, means for adding to said gaseous lasing medium a low ionization potential organic material gas selected from the group consisting of benzene, toluene, xylene, and trimethyl benzene.
Claim 4
Dependent Claim
21 words
The apparatus defined in claim 4, additionally including means for turbulent flow mixing the added gas wIth the gaseous lasing medium.
Claim 5
Dependent Claim
43 words
The apparatus defined in claim 4, wherein said gaseous lasing medium comprises a mixture of a plurality of gases, and additionally including means for supplying said plurality of gases, means for controlling the amount of each of said plurality of gases thus supplied.
Claim 6
Dependent Claim
17 words
The apparatus defined in claim 6, wherein said plurality of gases consist of He, N2 and CO2.
Claim 7
Dependent Claim
64 words
The apparatus defined in claim 4, wherein said means for adding said low ionization potential gas comprises a bubbler means containing gas to be added, means for directing a portion of the gaseous lasing medium through said bubbler means for directing said gas into said gaseous lasing medium, and means for controlling the amount of said gaseous lasing medium directed through said bubbler means.
References Cited (Backward Citations)
US3743963A
Cited
US3633125A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |