Method and apparatus for producing laser radiation following two

Details Method and apparatus for producing laser radiation following two Method and apparatus for producing laser radiation following two

1977-04-29

1979-02-20

Sikes, William L.

Oscillators

Molecular or particle resonant type

H01S 322

Patent

active

041409787

ABSTRACT:
Method and apparatus for producing laser radiation by two-photon optical pumping of an atomic or molecular gaseous medium and subsequent lasing action. A population inversion is created as a result of two-photon absorption of the gaseous species. Stark tuning is utilized, if necessary, in order to tune the two-photon transition into exact resonance. In particular, gaseous ammonia (NH.sub.3) or methyl fluoride (CH.sub.3 F) is optically pumped by a pair of CO.sub.2 lasers to create a population inversion resulting from simultaneous two-photon excitation of a high-lying vibrational state, and laser radiation is produced by stimulated emission of coherent radiation from the inverted level.

REFERENCES:
patent: 3575671 (1971-04-01), Dessus
patent: 3597695 (1971-08-01), Swain et al.
patent: 3857109 (1974-12-01), Pilloff
Barch et al., Optics Communications, vol. 15, No. 3, Nov.-Dec., 1975, pp. 358-360.
Bischel et al., Physical Review Letters, vol. 34, No. 6, Feb. 10, 1975, pp. 300-303.
Gullberg et al., Physica Scripta, vol. 8, 1973, pp. 177-182.
Jacobs et al., Applied Physics Letters, vol. 29, No. 11, Dec. 1 1976, pp. 710-712.

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