Influence of an optical dense medium at the Ramsey method of CPT resonance detection

摘要

In this paper we investigate the effects observed in optical dense medium when detecting the coherent population trapping resonance by the Ramsey method. The cloud of cold atoms interacts with two laser pulses one of which excites the coherent population trapping resonance and the second detects it. The signal of radiation passed through the medium and signal of fluorescence were analyzed. Shifts of the side peaks of the Ramsey fringes are observed with increasing optical density of the medium.