Oscillators – Molecular or particle resonant type
Patent
1974-10-24
1976-01-20
Webster, Robert J.
Oscillators
Molecular or particle resonant type
330 43, 331 945G, H01S 322, H01S 309
Patent
active
039342123
ABSTRACT:
A laser featuring, in one aspect, a volume of gas having a lasing constituent, a light source arranged to emit light having ionizing photons for ionizing the gas, the effective photon energy spectrum of the ionizing photons lying below the ionization potential of the lasing constituent and below the level of photon absorption bands of the gas, the spectrum being selected to provide an average penetration depth of the ionizing photons into the gas of at least 1 cm. and to photoionize the gas predominantly by a multiple step process involving absorption of successive photons at least the first of which has a photon energy less than the ionization potential of said lasing constituent, and an electric field source for applying to the gas a voltage sufficient to produce an avalanche breakdown in the gas to effectively raise the lasing constituent to its lasing level; and in another aspect a seed gas comprising an amine having the structure ##EQU1## where R.sub.1, R.sub.2, and R.sub.3 represent alkyl groups and in which R.sub.2 and R.sub.3 may together form a cycloalkyl group, the seed gas having an ionization potential below that of the lasing constituent.
REFERENCES:
patent: 3745482 (1973-07-01), Patez
Schriever, Applied Physics Letters, 20, (9), p. 354, May 72.
Eletskii et al., Soviet Physics--Dekkody, 15, (2), Aug. 70, pp. 109-111.
Javan Ali
Levine Jeffrey Steven
Hillman Robert E.
Massachusetts Institute of Technology
Santa Martin M.
Smith, Jr. Arthur A.
Webster Robert J.
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