US3842284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radioactive preionization method and apparatus for pulsed gas lasers
Assignee: United States Department of the Air Force
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Filing: 1972-12-15
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Granted: 1974-10-15
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Expires: 1992-12-15
Abstract
Abstract Radioactive preionization method and apparatus for pulsed gas lasers wherein emissions from a radioactive isotope located within or around the gas-laser active volume are used to create a constant, uniform preionization in the laser gas and aid the formation of the main electrical discharge pulse.
Inventors
- 👤 M Berta
- 👤 C Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:09
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/09; H01S3/097; H01S3/0977; H01S3/09775
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
65 words
The method of radioactive preionization for a gas laser having a gas-laser active volume comprising locating a radioactive source exclusively in the region of said gas-laser active volume with continuous and permanent emissions therefrom creating a constant, uniform preionization in the laser gas, and pulsing an electrical discharge in said gas laser to produce a population inversion resulting in a laser pulse in response thereto.
Claim 2
Independent Claim
65 words
The method of radioactive preionization for a gas laser having a gas-laser active volume comprising locating a radioactive source exclusively in the region of said gas-laser active volume with continuous and permanent emissions therefrom creating a constant, uniform preionization in the laser gas, and pulsing an electrical discharge in said gas laser to produce a population inversion resulting in a laser pulse in response thereto.
Claim 3
Dependent Claim
60 words
A radioactiVe preionization apparatus for a gas laser having a gas laser-active volume comprising radioactive means exclusively positioned in the region of said gas-laser active volume with continuous and permanent emissions therefrom creating a constant, uniform preionization in the laser gas, and means to pulse said gas-laser to produce a population inversion resulting in a laser pulse in response thereto.
Claim 4
Dependent Claim
60 words
A radioactiVe preionization apparatus for a gas laser having a gas laser-active volume comprising radioactive means exclusively positioned in the region of said gas-laser active volume with continuous and permanent emissions therefrom creating a constant, uniform preionization in the laser gas, and means to pulse said gas-laser to produce a population inversion resulting in a laser pulse in response thereto.
Claim 5
Dependent Claim
28 words
A radioactive preionization apparatus as described in claim 2 wherein said radioactive means is comprised of a coating of radioactive salt in the interior of said gas laser.
Claim 6
Dependent Claim
16 words
A radioactive preionization apparatus as described in claim 3 wherein said radioactive salt consists of polonium-210.
Claim 7
Dependent Claim
17 words
A radioactive preionization apparatus as described in claim 2 wherein said radioactive means consists of an isotope.
References Cited (Backward Citations)
US3657600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |