US3818375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multisided electron beam excited electrically pumped gas laser systems
Assignee: United States Atomic Energy Commission
•
Filing: 1973-03-27
•
Granted: 1974-06-18
•
Expires: 1993-03-27
Abstract
Abstract A gas laser amplifier system having a plurality of pumping chambers spaced around the circumference of a vacuum chamber which has disposed within it an electron gun system which produces a plurality of electron beams. The electron beams are sufficiently energetic and so directed that they produce substantial ionization through the entire volume of gaseous lasing medium that is to be electrically pumped in each pumping chamber. The system is adapted for use with lasing media at atmospheric pressure and above and is particularly useful with He-N2-CO2 gas mixtures.
Inventors
- 👤 R Stapleton
- 👤 R Hunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:11
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/09; H01S3/097; H01S3/09707
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
16 words
The gas laser system of claim 1 wherein said optical cavity is an optical resonant cavity.
Claim 2
Dependent Claim
17 words
The gas laser system of claim 1 wherein said lasing medium is at atmospheric pressure and above.
Claim 3
Dependent Claim
19 words
The gas laser system of claim 1 wherein said lasing medium is a mixture of He, N2, and CO2.
Claim 4
Dependent Claim
22 words
The gas laser system of claim 1 wherein said means for producing a plurality of electron beams is a cold cathode assembly.
Claim 5
Dependent Claim
22 words
The gas laser system of claim 1 wherein said means for producing a plurality of electron beams is a hot cathode assembly.
Claim 6
Dependent Claim
36 words
The gas laser system of claim 7 wherein said hot cathode assembly comprises a plurality of hot cathodes, each of said hot cathodes being so positioned as to direct an electron beam into a pumping chamber.
Claim 7
Dependent Claim
58 words
The gas laser system of claim 1 wherein said oppositely positioned electrodes consist of a planar mode having a Rogowski profile and a cathode adjacent to said window means, said cathode consisting of substantially parallel rods adapted to allow passage of an electron beam entering through said window means into the volume between said cathode and said anode.
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) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |