US3987372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical laser from radiative decomposition of chemicals
Assignee: United States Department of the Army
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Filing: 1974-09-30
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Granted: 1976-10-19
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Expires: 1994-09-30
Abstract
Abstract A continuous wave chemical laser device in which useful species such as free radicals as vibrationally excited molecules are generated by interaction of suitable chemicals such as hydrogen, sulfur hexafluoride, and carbon dioxide with laser radiation. The chemical laser device is capable of generating active species by interaction of its own laser radiation after first being initiated by a suitable initiator. The chemical reactions involved can take place at atmospheric pressure or higher and overcome disadvantages of ordinary chemical lasers.
Inventors
- 👤 John J. Ehrlich
- 👤 Thomas A. Barr, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:56
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/09; H01S3/095
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
235 words
A device for use in producing a laser output, said device comprising a housing having first and second chambers therein, a flow device located between said chambers for controlling flow from said first chamber into said second chamber, said flow device being a plate which has a plurality of flow passages therein; said second chamber having openings therein on opposite sides of said housing with Brewster angle windows mounted in said openings; an outlet from said second chamber and a pump mounted relative thereto for removing expended material from said second chamber; means for introducing a plurality of chemicals into said first chamber to be mixed therein; a laser source initiator means adjustably mounted relative to said housing for movement into and out of a path passing through said openings to provide initiator means directed into said second chamber for initiating a reaction in said chemical mixture to ultimately form an active laser medium; angled reflectors mounted relative to said openings for receiving light from said second chamber for causing said light to stimulate a laser beam from said laser medium and for reflecting said light onto another surface of said reflectors and then re-reflecting said light back into said second chamber at a position upstream of said stimulated laser beam to provide sustained reaction initiation of said chemical mixture; and one of said reflectors having an opening therein for coupling out said laser beam.
Claim 2
Independent Claim
235 words
A device for use in producing a laser output, said device comprising a housing having first and second chambers therein, a flow device located between said chambers for controlling flow from said first chamber into said second chamber, said flow device being a plate which has a plurality of flow passages therein; said second chamber having openings therein on opposite sides of said housing with Brewster angle windows mounted in said openings; an outlet from said second chamber and a pump mounted relative thereto for removing expended material from said second chamber; means for introducing a plurality of chemicals into said first chamber to be mixed therein; a laser source initiator means adjustably mounted relative to said housing for movement into and out of a path passing through said openings to provide initiator means directed into said second chamber for initiating a reaction in said chemical mixture to ultimately form an active laser medium; angled reflectors mounted relative to said openings for receiving light from said second chamber for causing said light to stimulate a laser beam from said laser medium and for reflecting said light onto another surface of said reflectors and then re-reflecting said light back into said second chamber at a position upstream of said stimulated laser beam to provide sustained reaction initiation of said chemical mixture; and one of said reflectors having an opening therein for coupling out said laser beam.
References Cited (Backward Citations)
US3753147A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-19 | 1980-04-19 | 1980-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-19 | 1984-04-19 | 1984-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-19 | 1988-04-19 | 1988-10-19 | $7700.00 | Window Closed / Lapsed |