Patent US3795874A successfully refreshed from Google Patents.
US3795874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for pumping a high pressure laser system
Assignee: United States Atomic Energy Commission
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Filing: 1972-11-03
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Granted: 1974-03-05
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Expires: 1992-11-03
Abstract
Abstract An apparatus for optically pumping a transversely excited, high pressure gaseous laser system by means of a double electrical discharge using a capacitor-bank network and electronic circuitry for implementing the method. Laser energy pulse outputs of approximately 17 Joules/liter at efficiencies of 24% have been obtained by the inventive concept.
Inventors
- 👤 Li Pan Yu
- 👤 A Bernhardt
- 👤 J Simpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:41
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/09; H01S3/097; H01S3/0971; H01S3/09713; H01S3/09716
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
196 words
In a double-discharge laser system including vessel means for containing a gaseous lasing media and within which are positioned electrode means consisting of cathode means, trigger electrode means, and anode means for exciting the media to a lasing state, the improvement comprising: a capacitor discharge power supply means operatively connected to said electrode means for impressing electrical discharges thereacross, and electronic circuitry operatively interconnected between said power supply means and said electrode means for time-shaping the discharge across said cathode means and said anode means and/or for independently applying voltage between said cathode means and said trigger electrode means, and between said cathode means and said anode means, said electronic circuitry including cathode lead means electrically interconnecting said power supply means and said cathode means through inductor means, trigger electrode lead means electrically connecting said trigger electrode means to ground through a first capacitor means, anode lead means operatively connecting said anode means to ground, means for electrically connecting said power supply means to ground, and second capacitor means electrically connected on one side thereof to said cathode lead means intermediate said iNductor means and said cathode means and on the other side thereof to ground.
Claim 2
Dependent Claim
196 words
In a double-discharge laser system including vessel means for containing a gaseous lasing media and within which are positioned electrode means consisting of cathode means, trigger electrode means, and anode means for exciting the media to a lasing state, the improvement comprising: a capacitor discharge power supply means operatively connected to said electrode means for impressing electrical discharges thereacross, and electronic circuitry operatively interconnected between said power supply means and said electrode means for time-shaping the discharge across said cathode means and said anode means and/or for independently applying voltage between said cathode means and said trigger electrode means, and between said cathode means and said anode means, said electronic circuitry including cathode lead means electrically interconnecting said power supply means and said cathode means through inductor means, trigger electrode lead means electrically connecting said trigger electrode means to ground through a first capacitor means, anode lead means operatively connecting said anode means to ground, means for electrically connecting said power supply means to ground, and second capacitor means electrically connected on one side thereof to said cathode lead means intermediate said iNductor means and said cathode means and on the other side thereof to ground.
Claim 3
Dependent Claim
69 words
The laser system defined in claim 1, wherein said capacitor discharge power supply means comprises at least a plurality of capacitors, a high voltage means for charging said capacitors, resistor means electrically connected intermediate said capacitors and said high voltage means, resistor means electrically connected intermediate said capacitors and ground, and trigger means electrically connected to said capacitors for switching energy stored in said capacitors to said electrode means.
Claim 4
Dependent Claim
34 words
The laser system defined in claim 2, wherein said trigger means comprises a plurality of spark gap assemblies, each one of which being operatively connected to an associated one of said plurality of capacitors.
Claim 5
Dependent Claim
70 words
The laser system defined in claim 1, wherein said capacitor discharge power supply means comprises a single capacitor electrically connected to a high voltage means for charging same, resistor means electrically connected intermediate one side of said capacitor and said high voltage means, means electrically connecting another side of said capacitor to ground, and trigger means electrically connected to said capacitor for switching energy stored therein to said electrode means.
Claim 6
Dependent Claim
39 words
The laser system defined in claim 1, additionally including resistor means electrically connected on one side thereof to said cathode lead means intermediate said power supply means and said inductor means and on the other side thereof to ground.
Claim 7
Dependent Claim
57 words
The laser system defined in claim 1, additionally including a third capacitor means electrically connected to said anode lead means intermediate said anode means and ground, and resistor means electrically connected on one side thereof to said anode lead means intermediate said anode means and said third capacitor means and on the other side thereof to ground.
Claim 8
Dependent Claim
90 words
The laser system defined in claim 1, wherein said cathode means comprises a plurality of cathode strips supported in spaced relationship and having the upper surface of each of said spaced strips in alignment, wherein said trigger electrode means comprises a plurality of trigger electrodes each positioned intermediate a pair of said cathode strips and in alignment with said upper surface of said cathode strips, and wherein said anode means comprises a plate-like member mounted above and in spaced relation with respect to said cathode strips and said trigger electrodes.
Claim 9
Dependent Claim
61 words
The laser system defined in claim 7, wherein said cathode strips each comprises a longitudinally extending body portion and curved end portions, wherein said trigger electrodes each comprises a wire-like member surrounded by a tube-like means, said plurality of trigger electrodes extending outwardly through said vessel means and each of said wire-like members being electrically connected to a bus bar means.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |