Patent US4780880A successfully refreshed from Google Patents.
US4780880A
Expired / Lapsed
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Chemical oxygen iodine laser
Assignee: MINES APPLIED TECHNOLOGY TRANSFER Inc
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Filing: 1987-05-14
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Granted: 1988-10-25
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Expires: 2007-05-14
Abstract
Abstract A method for enhancing the lasing action in a chemical oxygen iodine laser wherein a gas stream having a desired reactant gas concentration profile is combined with a diluent gas concentration profile using hydrogen as the diluent gas.
Inventors
- 👤 Robert A. Dickerson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:06
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/14; H01S3/22; H01S3/2215
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
In a method for converting infrared laser radiation to visible laser radiation comprising the steps of injecting a mixture of iodine, oxygen and fluorine gases into a laser cavity and passing infrared laser radiation having a wavelength of 1315 nm through the gases in said cavity to excite molecules therein and cause reactions among the molecules resulting in the production of excited iodine monofluoride molecules which release their excitation energy to produce visible laser radiation, wherein the improvement comprises: diluting the reactive gases with hydrogen gas in stoichiometric proportions; forming exhaust gases; cooling said exhaust gases to form water vapor by condensation; and exhausting said condensed water vapor into a cold trap thereby eliminating exhaust pumps in the laser operation.
Claim 2
Dependent Claim
120 words
In a method for converting infrared laser radiation to visible laser radiation comprising the steps of injecting a mixture of iodine, oxygen and fluorine gases into a laser cavity and passing infrared laser radiation having a wavelength of 1315 nm through the gases in said cavity to excite molecules therein and cause reactions among the molecules resulting in the production of excited iodine monofluoride molecules which release their excitation energy to produce visible laser radiation, wherein the improvement comprises: diluting the reactive gases with hydrogen gas in stoichiometric proportions; forming exhaust gases; cooling said exhaust gases to form water vapor by condensation; and exhausting said condensed water vapor into a cold trap thereby eliminating exhaust pumps in the laser operation.
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) | 1991-10-25 | 1992-04-25 | 1992-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-25 | 1996-04-25 | 1996-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-25 | 2000-04-25 | 2000-10-25 | $7700.00 | Window Closed / Lapsed |