US3717825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid laser
Assignee: Carl Zeiss AG
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Filing: 1972-03-03
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Granted: 1973-02-20
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Expires: 1992-03-03
Abstract
Abstract A liquid laser, particularly a dyestuff laser, is provided with a liquid guiding chamber through which circulates a cooled laser liquid and which is provided with a U-shaped laser active zone formed by a light transmitting longitudinal cap into which extends a tongue forming in said cap a U-shaped zone of uniform cross section. This U-shaped laser active zone is disposed in a focal line of an elliptically shaped pump light reflector while a source of pump light is disposed in the other focal line.
Inventors
- 👤 H Gerlach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:39
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/02; H01S3/04; H01S3/0402; H01S3/022; H01S3/09; H01S3/091; H01S3/0915; H01S3/092; H01S3/093
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
107 words
A liquid laser, particularly a dyestuff laser, comprising a liquid guiding chamber, a circulating means for a laser active liquid, cooling means for said laser active liquid, a pump light and a resonator system, said liquid guiding chamber including a feed connection and a discharge connection arranged directly adjacent each other and facing the same direction and a U-shaped connection range of the same cross section, and said connection range forming a laser active zone which is disposed in a focal line of an elliptically shaped pump light reflector acting as said resonator system, while a source of pump light is disposed in the other focal line.
Claim 2
Dependent Claim
107 words
A liquid laser, particularly a dyestuff laser, comprising a liquid guiding chamber, a circulating means for a laser active liquid, cooling means for said laser active liquid, a pump light and a resonator system, said liquid guiding chamber including a feed connection and a discharge connection arranged directly adjacent each other and facing the same direction and a U-shaped connection range of the same cross section, and said connection range forming a laser active zone which is disposed in a focal line of an elliptically shaped pump light reflector acting as said resonator system, while a source of pump light is disposed in the other focal line.
Claim 3
Dependent Claim
15 words
Liquid laser according to claim 1, in which said liquid guiding chamber is mirror symmetrical.
Claim 4
Dependent Claim
40 words
Liquid laser according to claim 1, including a light transmitting longitudinal cap with a curvature of small diameter surrounding said laser active zone of said liquid guiding chamber, and means connecting said cap with a metallic part of said chamber.
Claim 5
Dependent Claim
17 words
Liquid laser according to claim 1, in which the inner surface of said cap is satin finished.
Claim 6
Dependent Claim
14 words
Liquid laser according to claim 1, in which said cap is made of sapphire.
Claim 7
Dependent Claim
78 words
Liquid laser according to claim 1, including a light transmitting cap surrounding said laser active zone, a tongue extending into said cap, said cap having a curved inner face, said tongue being connected with a metallic part of said chamber and separating said feed and discharge connections of said liquid in said laser active zone, the distance of said curved inner face of said cap from said tongue determining the thickness of the layer of said active zone.
Claim 8
Dependent Claim
22 words
Liquid laser according to claim 6, in which the end of said tongue extending into saiD laser active zone is mirror burnished.
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) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |