Noise filtering via electromagnetically induced transparency

We report on the intensity-noise reduction of pseudo-thermal light via electromagnetically induced transparency (EIT) in the Λ-type system of the 5S1/2–5P1/2 transition in 87Rb. Noise filtering of the pseudo-thermal probe light was achieved via an EIT filter and measured according to the degree of i...

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Bibliographic Details
Published in:Optics communications 2017-01, Vol.383, p.31-35
Main Authors: Jeong, Taek, Bae, In-Ho, Moon, Han Seb
Format: Article
Language:English
Subjects:
EIT filter
Electromagnetically induced transparency
Pseudo-thermal light
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Summary:We report on the intensity-noise reduction of pseudo-thermal light via electromagnetically induced transparency (EIT) in the Λ-type system of the 5S1/2–5P1/2 transition in 87Rb. Noise filtering of the pseudo-thermal probe light was achieved via an EIT filter and measured according to the degree of intensity noise of the pseudo-thermal probe light. Reductions in the intensity and spectral noise of the pseudo-thermal probe light with the EIT filter were observed using the direct intensity fluctuation and heterodyne detection technique, respectively. Comparison of the intensity noise of the pseudo-thermal probe light before and after passing through the EIT filter revealed a significant reduction in the intensity noise.
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2016.08.070