Patent US4752937A successfully refreshed from Google Patents.
US4752937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas laser and production process therefor
Assignee: WC HERAEUS A GERMAN CORP GmbH
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Filing: 1986-09-29
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Granted: 1988-06-21
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Expires: 2006-09-29
Abstract
Abstract A gas laser has a coolable inner electrode for connection to a radio-frequency power source and a coolable outer electrode that is coaxial with and radially spaced from the inner electrode with an excitation space containing the gas to be excited in the radial space between the inner and outer electrodes. With a view to improving a laser of this type in such a way that excitation at higher power with retention of homogeneous discharge is possible, that gas decomposition is slower, and that any desired liquid coolant can be used regardless of the electrical conditions, the excitation space is radially bounded by two, tubular dielectric bodies which are coaxial with and radially spaced from each other.
Inventors
- 👤 Wolfram Gorisch
- 👤 Rolf Malkmus
- 👤 Rainer Nitsche
- 👤 Walter Skrlac
- 👤 Dieter Wendt
- 👤 Walter Wohlfart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:04
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/02; H01S3/04; H01S3/041; H01S3/03; H01S3/0305; H01S3/09; H01S3/097; H01S3/0975
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
108 words
A gas laser, comprising: inner and outer, coaxial, radially-spaced electrodes; means for connecting said inner and outer electrodes to a radio-frequency power source; cooling means for supplying a cooling fluid for fluid cooling said inner and outer electrodes; two tubular, dielectric bodies in the radial space between said inner and outer electrodes, the tubular dielectric bodies being coaxial with each other and radially spaced from each other for radially bounding a gas-containable excitation space of the laser which is physically shielded from said electrodes by the tubular dielectric bodies; and a mirror bounding each axial end of the excitation space, thereby forming a resonant cavity for the laser.
Claim 2
Dependent Claim
108 words
A gas laser, comprising: inner and outer, coaxial, radially-spaced electrodes; means for connecting said inner and outer electrodes to a radio-frequency power source; cooling means for supplying a cooling fluid for fluid cooling said inner and outer electrodes; two tubular, dielectric bodies in the radial space between said inner and outer electrodes, the tubular dielectric bodies being coaxial with each other and radially spaced from each other for radially bounding a gas-containable excitation space of the laser which is physically shielded from said electrodes by the tubular dielectric bodies; and a mirror bounding each axial end of the excitation space, thereby forming a resonant cavity for the laser.
Claim 3
Dependent Claim
18 words
The gas laser of claim 1, wherein at least one of said inner and outer electrodes is tubular.
Claim 4
Dependent Claim
31 words
The gas laser of claim 1, wherein the cooling means for cooling said outer electrode include means for providing a cooling fluid surrounding the radially outer surface of said outer electrode.
Claim 5
Dependent Claim
16 words
The gas laser of claim 2, wherein both of said inner and outer electrodes are tubular.
Claim 6
Dependent Claim
26 words
The gas laser of claim 1, wherein said cooling means for cooling said inner electrode include fluid inlet and outlet pipes arranged adjacent to each other.
Claim 7
Dependent Claim
26 words
The gas laser of claim 2, wherein said cooling means for cooling said inner electrode include fluid inlet and outlet pipes arranged adjacent to each other.
Claim 8
Dependent Claim
26 words
The gas laser of claim 3, wherein said cooling means for cooling said inner electrode include fluid inlet and outlet pipes arranged adjacent to each other.
Claim 9
Dependent Claim
23 words
The gas laser of claim 1, wherein at least one of the electrodes comprise a metallizing paste baked onto an associated dielectric body.
Claim 10
Dependent Claim
26 words
The gas laser of claim 1, and further comprising gas inlet and outlet means for inlet and outlet of the gas containable in the excitation space.
Claim 11
Dependent Claim
20 words
The gas laser of claim 1, wherein at least one of the dielectric bodies is made of an alumina ceramic.
Claim 12
Dependent Claim
16 words
The gas laser of claim 10, wherein both dielectric bodies are made of an alumina ceramic.
Claim 13
Dependent Claim
14 words
The gas laser of claim 8, wherein the metallizing paste comprises molybdenum and manganese.
Claim 14
Dependent Claim
27 words
The gas laser of claim 1, wherein said cooling means comprises means providing a water coolant radially inside and outside of said inner and outer electrodes, respectively.
Claim 15
Dependent Claim
27 words
The gas laser of claim 3, wherein said cooling means comprises means providing a water coolant radially inside and outside of said inner and outer electrodes, respectively.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-21 | 1991-12-21 | 1992-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-21 | 1995-12-21 | 1996-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-21 | 1999-12-21 | 2000-06-21 | $7700.00 | Window Closed / Lapsed |