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Output-input properties of incident light on a defect dielectric slab with quantum dot nanostructure

Jafarzadeh Hossein

Optica Applicata

2019

Vol. 49, nr 1

101--113

We demonstrate output-input properties of incident light in a defect slab doped by three-level quantum dot nanostructure via quantum coherence and Fano-interference phenomena. Here, we will show that the output-input properties of the system can be adjusted by the Fano-interference strength, amplitude and the relative phase of the driving fields, respectively. Also, we consider the thickness effect of defect medium on controlling the output-input behaviors of probe light. Moreover, we realize that it is possible to switch between optical bistability and optical multistability by optimizing the conditions which are more practical in all-optical switching based nanoscale devices.

Creating the optical bistable switch in the dielectric slab doped with asymmetric semiconductor quantum wells

Nasehi R.

Optica Applicata

2016

Vol. 46, nr 4

541--551

We have investigated the optical switching in a dielectric slab with a novel configuration of solid-state medium. This new scheme combines the attractive features of all-optical switching in dielectric medium doped with asymmetric quantum well nanostructure with the ability to convert the optical bistability to multistability (or vice versa) by using the strength of Fano interference and the energy splitting effect. The dependence of optical bistability behavior on the intensity of the strong coupling field and the slab thickness is also given.