Optical bistability in a three-level semiconductor quantum-well system

Fatemeh Taghdir, M.J. Karimi, Hasan Pakarzadeh

Stefan Schmitt-Rink, Claudia Ell, S. W. Koch +2 more

Rajab Nasehi

Abstract A scheme for switching of the optical bistability (OB) and multi-stability (OM) in a dielectric slab doped with a three-level ladder-configuration n-doped semiconductor quantum well is simulated. It is shown that the bistable behavior of the system in dielectric slab can be controlled via amplitude or relative phase of applied fields. This optical system may provide some new possibilities for test the switching process.

Robert Kuszelewicz, Bruno G. Sfez, D. Pellat +1 more

Mohammad Mahmoudi, Azar Vafafard, N. Nozari +1 more

We investigate the optical bistability (OB) behavior in a unidirectional ring cavity containing an asymmetric semiconductor double quantum dot (QD) system that forms a three-level V type system. We apply a probe and a coupling field to the system and it is shown that in the presence of inter-dot tunneling, the bistability of the system can be controlled by amplitude and relative phase of applied fields.

Hamid Reza Hamedi, Mohammad Reza Mehmannavaz, Afshari Hadi

The effects of optical field on the phenomenon of optical bistability (OB) are investigated in a K-type semiconductor double quantum well (SDQW) under various parametric conditions. It is shown that the OB threshold can be manipulated by increasing the intensity of coupling field. The dependence of the shift of OB hysteresis curve on probe wavelength detuning is then explored. In order to demonstrate controllability of the OB in this SDQW, we compare the OB features of three different configurations which could arise in this SDQW scheme, i.e., K-type, Y-type, and inverted Y-type systems. The controllability of this semiconductor nanostructure medium makes the presented OB scheme more valuable for applications in all-optical switches, information storage, and logic circuits of all optical information processing.