Optogalvanic effect as a detector for intracavity atomic absorption in a cw dye laser
- 1 May 1981
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 20 (9) , 1584-1587
- https://doi.org/10.1364/ao.20.001584
Abstract
It is demonstrated that the optogalvanic effect in a sodium hollow cathode discharge is a sensitive detector specific to the intracavity absorption of sodium atoms in a flame. In this feasibility study the variation of the optogalvanic signal vs the sodium concentration in the flame indicated a detection limit below 1 ng/ml. The sensitivity can be easily improved, and this technique is applicable to other atoms and Doppler-free intermodulation spectroscopic detection methods.Keywords
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