US3904986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas laser tube
Assignee: RCA Corp
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Filing: 1974-04-19
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Granted: 1975-09-09
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Expires: 1994-04-19
Abstract
Abstract A tubular, typically glass, portion of a gas-tight envelope is sealed at each end to a metal end member having a central, preferably curved, portion having a precision aperture therethrough. The apertures are sealed by mirrors seated within and bonded to the central portions. Disposed within the envelope are a capillary bore member, typically made of glass, having an ''''oversized'''' bore therethrough; and a metal cylinder in contact with one of the end members. The cylinder serves as the cathode electrode to which external connection is made via the end member in contact therewith, and the other end member serves as the anode electrode. The various parts can be manufactured simply and inexpensively by known pressing or punching and drawing techniques, and assembled by stacking and frit- and/or rfsealing.
Inventors
- 👤 Karl Gerhard Hernqvist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:03
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/02; H01S3/03; H01S3/034
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
130 words
A gas laser tube comprising: a. a gas-tight envelope having a longitudinal portion with opposite open ends: b. metal end members sealing said open ends of said envelope portion, each of said end members having an aperture therethrough; c. a capillary bore member disposed within said envelope portion and having a longitudinal bore aligned with said apertures through said end members; d. a different reflecting means bonded to each one of said end members and sealing each said aperture therethrough; said reflecting means forming an optical resonant cavity with said bore; at least one of said reflecting means being partially transparent for passage of an output laser beam; e. a laser gas within said envelope, and f. electrode means within said envelope for providing a gaseous dischargE through said bore.
Claim 2
Dependent Claim
130 words
A gas laser tube comprising: a. a gas-tight envelope having a longitudinal portion with opposite open ends: b. metal end members sealing said open ends of said envelope portion, each of said end members having an aperture therethrough; c. a capillary bore member disposed within said envelope portion and having a longitudinal bore aligned with said apertures through said end members; d. a different reflecting means bonded to each one of said end members and sealing each said aperture therethrough; said reflecting means forming an optical resonant cavity with said bore; at least one of said reflecting means being partially transparent for passage of an output laser beam; e. a laser gas within said envelope, and f. electrode means within said envelope for providing a gaseous dischargE through said bore.
Claim 3
Dependent Claim
24 words
The laser tube of claim 1, wherein each of said end members has a curved portion within which said different reflecting means is seated.
Claim 4
Dependent Claim
16 words
The gas laser tube of claim 1, wherein said capillary bore member is made of glass.
Claim 5
Dependent Claim
21 words
The gas laser tube of claim 1, wherein each of said end members has a flanged portion external to said envelope.
Claim 6
Dependent Claim
15 words
The gas laser tube of claim 1, wherein said envelope portion is made of glass.
Claim 7
Dependent Claim
22 words
The gas laser tube of claim 5, wherein said envelope further contains means for sealing said bore tube to said envelope portion.
Claim 8
Dependent Claim
27 words
The gas laser tube of claim 6, wherein said sealing means comprises at least one support member sealed to both said bore tube and said envelope portion.
Claim 9
Dependent Claim
20 words
The gas laser tube of claim 6, wherein said sealing means comprises a flared end portion of said bore tube.
Claim 10
Dependent Claim
17 words
The gas laser tube of claim 1, wherein said gas is a mixture of helium and neon.
Claim 11
Dependent Claim
31 words
The gas laser tube of claim 1, wherein said envelope portion is cylindrical, said capillary bore tube being mounted within said envelope with said bore coaxial with said cylindrical envelope portion.
Claim 12
Dependent Claim
29 words
The gas laser of claim 1, wherein said longitudinal envelope portion is glass and said metal end members are rf-sealed across the open ends of said glass envelope portion.
Claim 13
Dependent Claim
56 words
The gas laser of claim 1, wherein said apertures extend through respective central portions of said metal end members, said central portions of said end members being curved and forming a concave outer surface surrounding each of said apertures, said reflecting means comprising a different mirror bonded to the concave outer surface of each end member.
Claim 14
Dependent Claim
18 words
The laser tube of claim 1, wherein said electrode means includes at least one of said end members.
Claim 15
Dependent Claim
19 words
The gas laser tube of claim 13, wherein said at least one metal end member is an anode electrode.
Claim 16
Dependent Claim
32 words
The gas laser tube of claim 14, wherein said electrode means includes a cathode electrode mounted within said envelope portion and electrically connected to the other one of said metal end members.
Claim 17
Dependent Claim
23 words
The gas laser tube of claim 15, wherein said cathode electrode comprises a metal cylinder in coaxial partially-overlapping relationship with said bore tube.
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) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |