Indian Journal of Public Health Research & Development
  • Year: 2019
  • Volume: 10
  • Issue: 10

Medical Applications and Role of Stability on Quantum Dot Semiconductor Lasers with Positive and Negative Optoelectronics

  • Author:
  • Rajaa Hussein Abd Ali1, Basim Abdullattif Ghalib2,, Rabab Saadoon Abdoon3
  • Total Page Count: 6
  • Page Number: 2997 to 3002

1Physics Department, Science College, University of Kerbala, Karbala, Iraq

2Laser Physics Department, Science College for Women

3Physics Department, Science College, University of Babylon, Babylon, Iraq

*Corresponding Author: Basim Abdullattif Ghalib, Laser Physics Department, Science College for Women, University of Babylon, Babylon, Iraq, Basim2882004@yahoo.com

Online published on 23 December, 2019.

Abstract

Many applications are depending on the nonlinear dynamics of quantum dot semiconductor laser QDSL. In this study, the QDSL dynamics of a theoretical model including positive and negative optoelectronic feedback (OEF) are studied. Then deal with the density of photons and parameters affecting on OEF by using rate equations at constant value of time delay with positive and negative Optoelectronic feedback parts at. A series of stable pulses are obtained in the majority of the results with some mutations or spike during periods of time and the appearance of the chaos. This stable behavior only emerged with a time of (t = 110ps) and that results are importance significant in applications of medical lasers.

Keywords

Stability of quantum dot, Quantum Dot, optoelectronics feedback