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USA As Represented by Secretary of the Navy

Lester A Lee

Edward E Baroody

2-(4-pyridyl)-5-aryloxazoles and certain quaternary salts of these compounds are useful as visible-wavelength lasing dyes. These dyes are used in solution with non-interferring polar solvents, such as low molecular weight alcohols, H.sub.2 O, and D.sub.2 O, to form lasing media useful in dye lasers. Such lasers generally include a reservoir for containing the laser dye solution and a pumping energy source operably coupled therewith for producing stimulated emission of the dye solution.

Dye lasers using 2-(4-pyridyl)-5-aryloxazoles and quaternary salts of

Gas dynamic and hybrid gas dynamic-transfer chemical laser systems are achieved by burning halogenated or deuterated tetrazoles in the presence of an oxidizer.

Carbon dioxide laser fuels

A gas dynamic-transfer chemical laser is formed by burning a halogenated and deuterated tetrazole and expanding the combustion products through a supersonic nozzle and injecting into the expanding products, a secondary stream of cold D.sub.2 or cold H.sub.2.

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Oxon Hill, MD, United States of America

Lester A Lee