Statistical properties of macroscopic laser fields after coherent interaction with an atomic vapour

We present a series of experiments measuring intensity fluctuations and correlations of laser beams after propagation through an atomic vapour at room temperature in situations where coherent effects play a major role. In particular, we investigate these properties in the condition of electromagneti...

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Published inJournal of optics. B, Quantum and semiclassical optics Vol. 6; no. 6; pp. S518 - S523
Main Authors Alzar, Carlos L Garrido, Cruz, Luciano S da, Aguirre Gómez, José G, Martinelli, Marcelo, Santos, Marcelo França, Felinto, Daniel, Valente, Paulo, Failache, Horacio, Lezama, Arturo, Nussenzveig, Paulo
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.06.2004
Institute of Physics
Subjects
Astrophysics
Physics
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Summary:We present a series of experiments measuring intensity fluctuations and correlations of laser beams after propagation through an atomic vapour at room temperature in situations where coherent effects play a major role. In particular, we investigate these properties in the condition of electromagnetically induced transparency (EIT) in three-level lambda systems and in degenerate two-level systems. In a similar way, we also study the Hanle-EIT effect and electromagnetically induced absorption (EIA) in degenerate two-level systems. These results show the great influence of coherent interaction with the atomic system over the noise properties of the macroscopic laser fields, and indicate new sensitive ways of probing an atomic sample.
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ISSN:1464-4266
1741-3575
DOI:10.1088/1464-4266/6/6/009