US3893045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulsed chemical laser
Assignee: Individual
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Filing: 1971-12-01
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Granted: 1975-07-01
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Expires: 1991-12-01
Abstract
Abstract In the present application there is disclosed a hydrogen fluoride laser capable of operating super radiantly and at atmospheric pressure. A transverse electrical discharge is utilized to energize the reaction of a hydrogen donor to provide hydrogen fluoride in a metastable energy state which reverts to a stable state by laser action. A large range of hydrogen and fluorine donors is disclosed. A preferred pair of donors is sulphur hexafluoride and propane. Helium is frequently added to the gas mix to act as a buffer.
Inventors
- 👤 Thor V Jacobson
- 👤 George H Kimbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:08
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/09; H01S3/095; H01S3/097; H01S3/0971
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
188 words
A LASER COMPRISING, IN COMBINATION: A GASTIGHT LONGITUDINAL CAVITY HAVING A LONGITUDINAL AXIS THERETHROUGH, AN OPTICAL RESPONATOR COMPRISING LIGHT REFLECTING MEANS LOCATED ON THE LONGITUDINAL AXIS AT OPPOSITE ENDS OF THE CAVITY, ONE OF SAID REFLECTING MEANS ALSO HAVING MEANS TO PERMIT LIGHT TO PASS THERETHROUGH, MULTIPLE TRANSVERSE PIN ELECTRODES LOCATED WITHIN SAID CAVITY ON TRANSVERSELY OPPOSITE SIDES OF SAID LONGITUDINAL AXIS, SAID ELECTRODES HAVING TERMINALS OUTSIDE SAID CAVITY FOR CONNECTION TO MEANS FOR INITIATING AN ELECTRICAL DISCHARGE THEREBETWEEN, THE DIRECTION OF DISCHARGE BEING TRANSVERSE TO THE LONGITUDINAL AXIS AND THE DISCHARGE FROM ALL ELECTRODES BEING SIMULTANEOUS, MEANS PROVIDING A MIXTURE OF A HYDROGEN-RICH GAS AND A FLUORINE-RICH GAS TO SAID LASER CAVITY, SAID GASES BEING OF A TYPE WHICH CHEMICALLY REACT WITH EACH, OTHER, WHEN EXPOSED TO AN ELECTRICAL DISCHARGE, TO PRODUCE A HYDROGENFLUORINE GAS COMPOUND HAVING HYDROGEN FLUORIDE MOLECULES WHICH ARE IN AN EXCITED STATE, SO THAT SPONTANEOUS LASING ACTION OCCURS, AND MEANS FOR EXHAUSTING THE REACTION PRODUCTS OF SAID CHAMICAL REACTION FROM SAID CAVITY. SAID GASEOUS MIXTURE COMPRISING 6.4 TO 9.5 PARTS OF SF6, 1 PART OF C3H8, AND 0 TO 160 PARTS OF HE.
Claim 2
Dependent Claim
188 words
A LASER COMPRISING, IN COMBINATION: A GASTIGHT LONGITUDINAL CAVITY HAVING A LONGITUDINAL AXIS THERETHROUGH, AN OPTICAL RESPONATOR COMPRISING LIGHT REFLECTING MEANS LOCATED ON THE LONGITUDINAL AXIS AT OPPOSITE ENDS OF THE CAVITY, ONE OF SAID REFLECTING MEANS ALSO HAVING MEANS TO PERMIT LIGHT TO PASS THERETHROUGH, MULTIPLE TRANSVERSE PIN ELECTRODES LOCATED WITHIN SAID CAVITY ON TRANSVERSELY OPPOSITE SIDES OF SAID LONGITUDINAL AXIS, SAID ELECTRODES HAVING TERMINALS OUTSIDE SAID CAVITY FOR CONNECTION TO MEANS FOR INITIATING AN ELECTRICAL DISCHARGE THEREBETWEEN, THE DIRECTION OF DISCHARGE BEING TRANSVERSE TO THE LONGITUDINAL AXIS AND THE DISCHARGE FROM ALL ELECTRODES BEING SIMULTANEOUS, MEANS PROVIDING A MIXTURE OF A HYDROGEN-RICH GAS AND A FLUORINE-RICH GAS TO SAID LASER CAVITY, SAID GASES BEING OF A TYPE WHICH CHEMICALLY REACT WITH EACH, OTHER, WHEN EXPOSED TO AN ELECTRICAL DISCHARGE, TO PRODUCE A HYDROGENFLUORINE GAS COMPOUND HAVING HYDROGEN FLUORIDE MOLECULES WHICH ARE IN AN EXCITED STATE, SO THAT SPONTANEOUS LASING ACTION OCCURS, AND MEANS FOR EXHAUSTING THE REACTION PRODUCTS OF SAID CHAMICAL REACTION FROM SAID CAVITY. SAID GASEOUS MIXTURE COMPRISING 6.4 TO 9.5 PARTS OF SF6, 1 PART OF C3H8, AND 0 TO 160 PARTS OF HE.
Claim 3
Dependent Claim
185 words
A laser comprising, in combination: a gastight longitudinal cavity having a longitudinal axis therethrough; an optical responator comprising light reflecting means located on the longitudinal axis at opposite ends of the cavity, one of said reflecting means also having means to permit light to pass therethrough; multiple transverse pin electrodes located within said cavity on transversely opposite sides of said longitudinal axis, said electrodes having terminals outside said cavity for connection to means for initiating an electrical discharge therebetween, the direction of discharge being transverse to the longitudinal axis and the discharge from all electrodes being simultaneous; means providing a mixture of a hydrogen-rich gas and a fluorine-rich gas to said laser cavity, said gases being of a type which chemically react with each other, when exposed to an electrical discharge, to produce a hydrogenfluorine gas compound having hydrogen fluoride molecules which are in an excited state, so that spontaneous lasing action occurs; and means for exhausting the reaction products of said chemical reaction from said cavity, said gaseous mixture comprising 9.5 parts of SF6 to 1 part of C3H8 to 160 parts of He.
Claim 4
Dependent Claim
185 words
A laser comprising, in combination: a gastight longitudinal cavity having a longitudinal axis therethrough; an optical responator comprising light reflecting means located on the longitudinal axis at opposite ends of the cavity, one of said reflecting means also having means to permit light to pass therethrough; multiple transverse pin electrodes located within said cavity on transversely opposite sides of said longitudinal axis, said electrodes having terminals outside said cavity for connection to means for initiating an electrical discharge therebetween, the direction of discharge being transverse to the longitudinal axis and the discharge from all electrodes being simultaneous; means providing a mixture of a hydrogen-rich gas and a fluorine-rich gas to said laser cavity, said gases being of a type which chemically react with each other, when exposed to an electrical discharge, to produce a hydrogenfluorine gas compound having hydrogen fluoride molecules which are in an excited state, so that spontaneous lasing action occurs; and means for exhausting the reaction products of said chemical reaction from said cavity, said gaseous mixture comprising 9.5 parts of SF6 to 1 part of C3H8 to 160 parts of He.
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) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |