Patent US4028635A successfully refreshed from Google Patents.
US4028635A
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Vibration energy transfer laser
Assignee: Alcatel Lucent SAS
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Filing: 1975-12-24
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Granted: 1977-06-07
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Expires: 1995-12-24
Abstract
Abstract The invention concerns a vibration energy transfer laser. Vibration energy which is transferred by molecular interaction to bromhydric acid which can then produce infra-red light by stimulated emission, is imparted to nitrogen. Application to the transmission of light through the atmosphere.
Inventors
- 👤 Henry Brunet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:16
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/14; H01S3/22; H01S3/223; H01S3/09; H01S3/097; H01S3/09707
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
94 words
In an apparatus for the stimulated emission of coherent radiation and comprising: a first gaseous molecular medium; means for exciting said first medium by supplying vibrational energy to its molecules; a second active gaseous molecular medium; means for mixing said first and second mediums whereby vibrational energy is transferred from said first to said second medium to create a population inversion in said second medium; and means for stimulating the emission of coherent radiation from said second medium; the improvement wherein said second active medium is hydrogen bromide, and said first medium is nitrogen.
Claim 2
Dependent Claim
94 words
In an apparatus for the stimulated emission of coherent radiation and comprising: a first gaseous molecular medium; means for exciting said first medium by supplying vibrational energy to its molecules; a second active gaseous molecular medium; means for mixing said first and second mediums whereby vibrational energy is transferred from said first to said second medium to create a population inversion in said second medium; and means for stimulating the emission of coherent radiation from said second medium; the improvement wherein said second active medium is hydrogen bromide, and said first medium is nitrogen.
Claim 3
Dependent Claim
90 words
The improvement according to claim 1, in which said means for exciting said first medium and for mixing it with said second medium comprise: an excitation enclosure; means for supplying said enclosure with a gaseous mixture of nitrogen and hydrogen bromide; an electron gun for providing pulses of electrons whose energy is between 100 and 200 keV; and means for causing in said enclosure, approximately at the end of each phase, an electric discharge whose energy is between 100 and 500 Joules per litre of the volume of said enclosure.
Claim 4
Dependent Claim
71 words
The improvement according to claim 2, characterized in that the nitrogen pressure in the gaseous mixture is between 200 and 1000 torrs, the hydrogen bromide pressure is between 1% and 10% of that of the nitrogen, the current density supplied by said electron gun is between 0.5 and 5 A/squ.cm during a time period between 0.5 and 5 microseconds, and the temperature of the mixture is between 200° and 300° K.
Claim 5
Dependent Claim
15 words
Laser according to claim 3, characterized in that the said gaseous mixture comprises, moreover, argon.
References Cited (Backward Citations)
US3810042A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-06 | 1980-12-06 | 1981-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-06 | 1984-12-06 | 1985-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-06 | 1988-12-06 | 1989-06-07 | $7700.00 | Window Closed / Lapsed |