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Chinese Physics Letters

Study on the abnormal signal in the saturation absorption spectroscopy of sodium atoms

Hu Yuan-hui, J. S. Fu

Published Oct 1, 1985• 2 citations
Publisher

Abstract

The abnormal saturation absorption signal of sodium atom D1 line has been observed in different experimental conditions. The explanation has been presented quantitatively using the velocity-selective optical pumping model.
DOI
10.1088/0256-307x/2/10/001

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Using an external cavity-tuned diode laser in Doppler-free saturation spectroscopy, we are able to resolve the weak-field Zeeman splittings in the hyperfine levels of the rubidium D1 line. The number of lines observed in the Zeeman structure of rubidium and their measured energy-level splittings are as expected from theory. The measured amplitudes of the saturated-absorption signals, crossover resonances, and velocity-selective optical pumping signals are used in the analysis of various theories concerning saturated-absorption spectroscopy.