https://doi.org/10.1140/epjd/e2004-00073-7
Large index of refraction without absorption via decay-induced coherence in a three-level V system
1
College of Physics, Jilin University, Changchun 130023, P.R. China
2
Key Laboratory of Coherent Light, Atomic and Molecular Spectroscopy, Educational Ministry
of China, P.R. China
3
CCAST (World Laboratory), P.O. Box 8370, Beijing 100080, P.R. China
Corresponding author: a jygao@mail.jlu.edu.cn
Received:
30
November
2003
Revised:
27
February
2004
Published online:
26
May
2004
We study the effects of quantum interference from spontaneous emission on the dispersion-absorption properties in a three-level V-type atomic system with two near-degenerate excited levels. We found that due to the quantum interference between two spontaneous decay channels, large index of refraction without absorption always can be obtained just by choosing proper values of the relative phase between the two applied fields.
PACS: 42.50.Gy – Effects of atomic coherence on propagation, absorption, and amplification of light; electromagnetically induced transparency and absorption / 42.50.Hz – Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2004
