Birefringence in electromagnetically induced transparency.
(4)He 2 (3)S(1) --> 2 (3)P transitions at 1083 nm were laser probed in the presence of radiation that coupled the 2 (3)P level with the 3 (3)S(1) level in a ladder scheme. The metastable helium that was used was produced in a rf discharge. Significant atomic birefringence was detected, in addition to complete electromagnetically induced transparency. A simple theoretical model explains the experimental results.
Pavone
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European Laboratory for Non-linear Spectroscopy, Largo E. Fermi 2, Firenze, Italy.
Bianchini
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Cataliotti
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FS
Hänsch
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TW
Inguscio
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