Sideband control of optical bistability and multistability

Xiang-an Yan, Boquan Ren, Bao-rui Duan +2 more

T. Yabuzaki, Masao Kitano

郭洪菊 Hongju Guo, 汪丽春 Lichun Wang, 钮月萍 Yueping Niu +2 more

We investigate the optical bistability and multistability behaviors in a closed three-level Λ-type atomic system.By adding a sideband on either hand of the transitions which are originally coupled by a coherent control field and a coherent probe field to disturb the two-photon resonance, bistability occurs due to two-channel interference.Increasing the sideband Rabi frequency leads to the switching from bistability to tristability.When the sideband simultaneously couples with both hands, we can easily obtain quadrastability.

Seyyed Hossein Asadpour, HAMID RAHIMPOUR SOLEIMANI

All-optical coherent control of optical bistability (OB) and optical multistability (OM) in the 4.8 nm ZnSe single-quantum well based on excitons and biexciton transitions is investigated. By applying a pair of phase-locked laser pulses all-optical coherent control can be obtained. Theoretical analysis with density matrix and Maxwell equations then yield the optical bistability and optical multistability. It is shown that by controlling the coherent and incoherent processes, the intensity threshold of OB and OM can be modified. Also, it is found that the switching between OB and OM or vice versa can be occurred for some controllable parameters.

Sergei N Bagaev, V. A. Nikulin, Е. А. Титов