Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1534604 | Optics Communications | 2014 | 6 Pages |
Abstract
In this paper, the effect of terahertz signal field on optical bistability and multistability in InGaN/GaN quantum dot nanostructure inside a unidirectional ring cavity is investigated. Quantum dot nanostructure is designed numerically by Schrödinger and Poisson equations which solve self consistently. By size control of quantum dot and external voltage, one can design a four level quantum dot with appropriate energy levels which can be suitable for controlling the optical bistability and multistability by terahertz signal field. It is found that the frequency detuning and intensity control of terahertz signal radiation as well as the dephasing decay rates can influence the optical bistability and multistability behaviors.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Seyyed Hossein Asadpour, H. Rahimpour Soleimani,