https://doi.org/10.1140/epjd/e2009-00173-x
Effect of spontaneously generated coherence on EIT and its refractive properties in four- and five-levels systems
1
Department of Mathematics, Al-Azhar University, Faculty of Science (Women's Section), P.O. Box 11754, Cairo, Egypt
2
Department of Mathematics, College of Science, University of Bahrain, P.O. Box 32038, Kingdom of Bahrain, Egypt
3
Department of Physics, Eastern Illinois University, Charleston, IL, 61920, USA
Corresponding author: a ajoshi@eiu.edu
Received:
11
September
2008
Revised:
19
January
2009
Published online:
16
June
2009
The effects of spontaneously generated coherence (SGC) and phases of optical fields on the phenomenon of electromagnetically induced transparency (EIT) are investigated in a four-level inverted-Y system and in a five-level K-type system under various parametric conditions in order to demonstrate controllability of the EIT, dispersion properties, and group velocity in such systems. Non-zero second-order susceptibility in both systems is due to the SGC effect. The experimental viability of the model in semiconductor quantum well systems is also discussed.
PACS: 42.50.Gy – Effects of atomic coherence on propagation, absorption, and amplification of light; electromagnetically induced transparency and absorption / 42.50.Nn – Quantum optical phenomena in absorbing, amplifying, dispersive and conducting media; cooperative phenomena in quantum optical systems
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2009
