Optical bistability and multistability via amplitude and phase control in a Duplicated two-level system

Mohammad Mahmoudi, Mostafa Sahrai, Seyede Masoumeh Mousavi

Lida Ebrahimi Zohravi, Azar Vafafard, Mohammad Mahmoudi

Luling Jin, Zhongyao Feng

We investigate the optical bistability (OB) in a duplicated two-level system contained in a ring cavity.The atoms are driven by two orthogonally polarized fields with a relative phase.The OB behavior of such a system can be controlled by the amplitude and the relative phase of the coupling field, and it is possible to switch between bistability and multistability by adjusting the relative phase.

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

Seyyed Hossein Asadpour, HAMID RAHIMPOUR SOLEIMANI

The optical bistability and multistability properties of a four-level quantum system near a plasmonic nanostructure embedded in a unidirectional ring cavity are studied theoretically. Two orthogonal circularly polarized laser fields with the same frequency, different phases and electric fields amplitude are interacted by four-level quantum system. It is found that in the presence of the plasmonic nanostructure, the bistable behaviors related to one of the laser fields propagating through the unidirectional ring cavity can be modified by relative phase and amplitude control of another laser fields. Our obtained results show that the optical bistability can be converted into the optical multistability by varying the value of distance between the quantum system and the surface of the plasmonic nanostructure. Moreover, it is shown that under specific condition related to the distance, the lasing without population inversion can be obtained.

Harry J. Kimble, David E. Grant, Albert T. Rosenberger +1 more