Two-photon free-induction decay with electromagnetically induced transparency
|Authors||Chen, J. F.
Loy, M. M. T.
Wong, G. K. L.
|Source||Optics letters , v. 35, (11), 2010, JUN 1, p. 1923-1925|
|Summary||We report the observation of coherent two-photon free-induction decay (FID) in a three-level. system excited by a low-intensity square-modulated laser pulse. Using electromagnetically induced transparency in an Rb-85 cold atomic cloud, for what we believe to be the first time, we observe FID signals with coherence time exceeding the relevant atomic excited-state natural lifetime. Because of the on-resonance enhancement, the two-photon FID signal can be observed at the falling edge without using heterodyne means. (C) 2010 Optical Society of America|
|Rights||We would like to give credit to the Optical Society of America for granting us permission to repost this Optics Letters article. The original article is posted on the journal's web site at http://www.opticsinfobase.org/ol/Issue.cfm|
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