Abstract:
In this paper, the effect of permanent dipole moments on optical
bistability of weak probe light in a unidirectional ring cavity with three-level
molecule is investigated. It is found that the intensity threshold of
optical bistability (OB) and optical multistability (OM)
can be controlled by quantum coherence induced by
permanent dipole moments. Also, it is shown that switching from OB to OM and
lasing without population inversion can be occurred by this coherence under
different conditions.
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