Oscillators – Molecular or particle resonant type
Patent
1978-08-10
1980-09-30
Davie, James W.
Oscillators
Molecular or particle resonant type
331 945G, H01S 309, H01S 314
Patent
active
042258316
ABSTRACT:
A donor gas, such as helium or argon, is pumped into a receiving end of a chamber formed with widely-diverging walls providing an expanded area at its delivery end. Electrodes mounted in the receiving end produce a potential capable of exciting the admitted gas into He.sub.2.sup.+ or argon metastables. An arc discharge is produced for the helium and a glow discharge for the argon. The excited donor then flows through the chamber to a diffusion mixer formed by an array of nozzles covering its expanded delivery end area where it continually mixes with an acceptor gas, such as N.sub.2, supplied through the nozzles. Mixing results in an electronic excitation energy transfer reaction in which the charge from the excited donor is transferred to the acceptor. An optical resonant cavity communicating with the nozzle array receives the excited acceptor and population inversion in the cavity generates a laser beam. With nitrogen, the emission is a continuous wave in the UV-visible region.
REFERENCES:
patent: 3970964 (1976-07-01), Olson et al.
patent: 4053852 (1977-10-01), Krupke
J. B. Laudenslager et al., "Electric-discharge-pumped nitrogen ion laser*", pplied Physics Letters, vol. 29, No. 9, Nov. 1976, pp. 580-582.
C. B. Collins et al., "A nitrogen ion laser pumped by charge transfer*", Applied Physics Letters, vol. 25, No. 6, Sep. 15, 1974, pp. 344-345.
Ault Earl R.
Bhaumik Mani L.
Davie James W.
Phillips Thomas M.
Sciascia Richard S.
The United States of America as represented by the Secretary of
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