Optical bistability through cavity effect in a four-level open atomic medium
H. R. Hamedi
Institute of Theoretical Physics and Astronomy, Vilnius University, LT-01108 Vilnius, Lithuania
Abstract
The optical bistability and multistability behavior in a ring
cavity for the four-level open
atomic system, driven by two coupling fields has been analyzed. It is shown
that the presence
of exit rate from cavity is having a dominant effect on generating the
optical bi(multi)
stability on the system. We find that, the effects of the injection rates
might be of use to
control the threshold intensity. Also, it is found that optical bistability
(OB) can convert to optical multistability (OM) or vice versa via
the effect of intensity and detuning of the coupling fields.