Oscillators – Molecular or particle resonant type
Patent
1978-11-13
1980-01-15
Sikes, William L.
Oscillators
Molecular or particle resonant type
356308, H01S 313
Patent
active
041841271
ABSTRACT:
An apparatus and method for utilizing the opto-galvanic effect to perform ectroscopic or analytic investigations of atomic or molecular species. A sample of the substance to be analyzed is vaporized in an analytical flame, gas discharge tube, high temperature furnace or the like, and the vapor is irradiated with chopped or pulsed variable wavelength monochromatic light. The electrical resistance of the vapor is monitored as the frequency of the radiation is tuned through one or more electronic transition frequencies of the substance. The resistance spectrum resembles the optical absorption spectrum of the species in the vapor. The optogalvanic effect may also be used to frequency lock a laser to a transition frequency of a substance in a gas discharge cell.
REFERENCES:
patent: 3691478 (1972-09-01), Jacobs et al.
patent: 3718868 (1973-02-01), Pao et al.
Green Robert B.
Keller Richard A.
Luther Gabriel G.
Schenk Peter C.
Travis John C.
Englert Alvin J.
Pawlikowski Eugene J.
Sikes William L.
The United States of America as represented by the Secretary of
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