Patent US3668550A successfully refreshed from Google Patents.
US3668550A
Expired / Lapsed
US
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Gas laser low ionization electric discharge
Assignee: RTX Corp
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Filing: 1969-09-10
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Granted: 1972-06-06
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Expires: 1989-09-10
Abstract
Abstract An electric discharge gas laser includes in its gas mixture a small amount of low ionization potential substance proportioned so as to provide a ratio of electric field intensity to neutral gas density within an electric discharge plasma which promotes substantially maximum upper laser level excitation in the lasing gas. Specific embodiments include CO2-N2-He-Cs and CO2-Cs-He, in mixing and pre-mixed configurations.
Inventors
- 👤 Robert H Bullis
- 👤 William Nighan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:04
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/09; H01S3/097; H01S3/0979
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
12 words
The method according to claim 1 wherein the alkali metal is cesium.
Claim 2
Dependent Claim
34 words
The method accordinG to claim 1 including the further improvement of providing an additional gas to the electric discharge region to enhance the excitation of the upper vibrational energy states of the laser gas.
Claim 3
Dependent Claim
13 words
The method according to claim 3 in which the alkali metal is cesium.
References Cited (Backward Citations)
US3464028A
Cited
US3424997A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |