https://doi.org/10.1140/epjb/e2011-20224-9
Regular Article
Hartman effect in one-dimensional photonic crystals with a three-level atomic defect layer
1
Research Institute for Applied Physics and Astronomy, University
of Tabriz, Tabriz,
Iran
2
Department of Physics, Zanjan University,
PO Box 45195-313, Zanjan, Iran
3
Faculty of Graduate Education, University of Bonab,
Bonab,
Iran
a
e-mail: sahrai@tabrizu.ac.ir
Received:
23
March
2011
Received in final form:
2
July
2011
Published online:
12
October
2011
The Hartman effect in one-dimensional photonic crystals contained a defect layer doped with two-level, and three-level atoms is discussed. It is shown that the transmitted phase time in one-dimensional photonic crystals contained a defect layer reaches to a positive constant as the periodic number N increases. However, for a defect layer doped by two-level atoms, the transmitted phase time reaches to negative constant by increasing periodic number N. In addition, for defect layer doped by three-level atoms, the transmitted phase time can be controlled from positive to negative just by the Rabi-frequency of coupling field.
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag, 2011
