Oscillators – Molecular or particle resonant type
Patent
1979-03-21
1981-08-11
Sikes, William L.
Oscillators
Molecular or particle resonant type
331 945P, H01S 305
Patent
active
042836867
ABSTRACT:
In a pulsed gas laser, pulses of electrical or other energy are desirably converted in part into pulses of quantum mechanical pumping of the lasable gas, and unavoidably converted in part into pulses of heating of the lasable gas. According to this invention, efficiency and economy of operation are enhanced by exploiting the pulses of heating to propel and recirculate the gas through cooling means to freshen it thermally for further cycles of lasing, utilizing a structure comprising an acoustically tuned duct and an acoustic diode to establish proper phasing and direction of the pulsed and recirculating operation. The invention, although applicable to other gas lasers, is particularly applicable to electron beam ionized, electrical current sustained lasers. The invention reduces if not eliminates the cost, bulk and other disadvantages of a mechanical pump or other conventional recirculation equipment. Cooling of the recirculating gas is accomplished, at least in part and preferably in large measure, by injection of make-up gas of the lasable gas composition under cooling conditions.
REFERENCES:
patent: 3582821 (1971-06-01), Gordon et al.
patent: 3702973 (1972-11-01), Daugherty et al.
patent: 3863103 (1975-01-01), Eckbreth et al.
patent: 3886477 (1975-05-01), Ruby et al.
patent: 3919662 (1975-11-01), Born
patent: 3936772 (1976-02-01), Sucov et al.
Daugherty Jack D.
Kantrowitz Arthur R.
Sutton George W.
Zappa Oswald L.
Avco Everett Research Laboratory, Inc.
Frederick Melvin E.
Jr. Leon Scott
Sikes William L.
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