US3811095A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric-discharge excited gaseous laser
Assignee: Calspan Corp
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Filing: 1972-06-20
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Granted: 1974-05-14
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Expires: 1992-06-20
Abstract
Abstract A diatomic molecular laser having an electrical gas discharge for increasing the vibrational energy of the gas and a supersonic expansion nozzle for reducing the translational temperature of the gas and optically aligned reflecting surfaces in the walls of the supersonic nozzle in communication with the electrical gas discharge.
Inventors
- 👤 J Rich
- 👤 C Treanor
- 👤 J Daiber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:27
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/09; H01S3/097; H01S3/0979
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
119 words
A diatomic molecular gas laser, comprising; a. a diatomic molecular gas, b. means providing an electrical glow discharge in said gas for exciting the vibrational energy levels thereof which means comprises a pair of spaced electrodes, c. an expansion nozzle having a throat section and a diverging section adjacent thereto, d. means adapted to establish a pressure differential across said throat section sufficient to establish a choked condition thereat whereby said gas undergoes a supersonic expansion through said nozzle from said throat section to said diverging section to thereby reduce the translational temperature of said gas causing a population inversion thereof; and e. means optically coupled with said diverging section for stimulating the emission of radition from said gas.
Claim 2
Dependent Claim
119 words
A diatomic molecular gas laser, comprising; a. a diatomic molecular gas, b. means providing an electrical glow discharge in said gas for exciting the vibrational energy levels thereof which means comprises a pair of spaced electrodes, c. an expansion nozzle having a throat section and a diverging section adjacent thereto, d. means adapted to establish a pressure differential across said throat section sufficient to establish a choked condition thereat whereby said gas undergoes a supersonic expansion through said nozzle from said throat section to said diverging section to thereby reduce the translational temperature of said gas causing a population inversion thereof; and e. means optically coupled with said diverging section for stimulating the emission of radition from said gas.
Claim 3
Dependent Claim
36 words
The apparatus according to claim 1, wherein; f. said electrical discharge is located in a chamber adjacent an end of said throat section which is remote from an end thereof that is adjacent said diverging section.
Claim 4
Dependent Claim
33 words
The apparatus according to claim 2, wherein; g. said nozzle has a central longitudinal axis, and h. said electrodes having openings, the axes of which are substantially parallel to said central longitudinal axis.
Claim 5
Dependent Claim
27 words
The apparatus according to claim 2, wherein; g. said means for stimulating comprises optically aligned surfaceS located in opposed and spaced wall portions of said diverging section.
Claim 6
Dependent Claim
27 words
The apparatus according to claim 1, wherein; f. said means for stimulating comprises optically aligned surfaces located in opposed and spaced wall portions of said diverging section.
References Cited (Backward Citations)
US3543179A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-13 | 1977-11-12 | 1978-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-13 | 1981-11-12 | 1982-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-13 | 1985-11-12 | 1986-05-14 | $7700.00 | Window Closed / Lapsed |