Optical Bistability in Coherent Medium of Tripod Type Four-level

Seyyed Hossein Asadpour, A. Eslami-Majd

N. A. Ivanova, Alexander S. Rubanov, Alexei L. Tolstik +1 more

M. A. Antón, Óscar G. Calderón, Sonia Melle +2 more

Huijing Li, Hongjun Zhang, Hui Sun +3 more

Optical bistability (OB) and optical multistability (OM) behaviors induced by multiple spontaneously generated coherence (SGC) are investigated theoretically in a tripod four-level atomic scheme. It is found that OB or OM is sensitive to the SGC effects, and the thresholds of OB can be controlled via changing the strength of multiple SGC or the relative phases of the applied fields. In addition, we can switch OB to OM by adjusting the twofold relative phases of the applied fields or vice versa.

Xionghui Hu, Hongjun Zhang, Hui Sun +3 more

Optical bistability and multistability behaviors are investigated in a tripod four-level atomic configuration, including a unidirectional ring cavity. We find that optical bistability and multistability can be obtained by changing the relative phase of the driven fields and the intensity of the microwave field. In addition, we can switch optical bistability to optical multistability by adjusting the relative phase of the driven fields or vice versa, and the threshold can be controlled via changing the parameters of the scheme.

Harry J. Kimble, Albert T. Rosenberger, P. D. Drummond