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Title: External modes in quantum dot light emitting diode with filtered optical feedback

Abstract

This research reports a theoretical investigation on the role of filtered optical feedback (FOF) in the quantum dot light emitting diode (QD-LED). The underlying dynamics is affected by a sidle node, which returns to an elliptical shape when the wetting layer (WL) is neglected. Both filter width and time delay change the appearance of different dynamics (chaotic and mixed mode oscillations, MMOs). The results agree with the experimental observations. Here, the fixed point analysis for QDs was done for the first time. For QD-LED with FOF, the system transits from the coherence collapse case in conventional optical feedback to a coherent case with a filtered mode in FOF. It was found that the WL washes out the modes which is an unexpected result. This may attributed to the longer capture time of WL compared with that between QD states. Thus, WL reduces the chaotic behavior.

Authors:
 [1];  [2];  [3];  [4];  [1];  [3]
  1. Nassiriya Nanotechnology Research Laboratory, Science College, Thi-Qar University, Nassiriya (Iraq)
  2. (Iraq)
  3. Department of Physics, College of Science, University of Baghdad, Al Jadiriyah, Baghdad (Iraq)
  4. (Italy)
Publication Date:
OSTI Identifier:
22596785
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 119; Journal Issue: 22; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CHAOS THEORY; COMPARATIVE EVALUATIONS; FEEDBACK; FILTERS; LAYERS; LIGHT EMITTING DIODES; OSCILLATION MODES; QUANTUM DOTS; TIME DELAY; WIDTH

Citation Formats

Al Husseini, Hussein B., Department of Physics, College of Science, University of Baghdad, Al Jadiriyah, Baghdad, Al Naimee, Kais A., Istituto Nazionale di Ottica-CNR, Largo E. Fermi 6, 50125 Firenze, Al-Khursan, Amin H., and Khedir, Ali. H.. External modes in quantum dot light emitting diode with filtered optical feedback. United States: N. p., 2016. Web. doi:10.1063/1.4953651.
Al Husseini, Hussein B., Department of Physics, College of Science, University of Baghdad, Al Jadiriyah, Baghdad, Al Naimee, Kais A., Istituto Nazionale di Ottica-CNR, Largo E. Fermi 6, 50125 Firenze, Al-Khursan, Amin H., & Khedir, Ali. H.. External modes in quantum dot light emitting diode with filtered optical feedback. United States. doi:10.1063/1.4953651.
Al Husseini, Hussein B., Department of Physics, College of Science, University of Baghdad, Al Jadiriyah, Baghdad, Al Naimee, Kais A., Istituto Nazionale di Ottica-CNR, Largo E. Fermi 6, 50125 Firenze, Al-Khursan, Amin H., and Khedir, Ali. H.. 2016. "External modes in quantum dot light emitting diode with filtered optical feedback". United States. doi:10.1063/1.4953651.
@article{osti_22596785,
title = {External modes in quantum dot light emitting diode with filtered optical feedback},
author = {Al Husseini, Hussein B. and Department of Physics, College of Science, University of Baghdad, Al Jadiriyah, Baghdad and Al Naimee, Kais A. and Istituto Nazionale di Ottica-CNR, Largo E. Fermi 6, 50125 Firenze and Al-Khursan, Amin H. and Khedir, Ali. H.},
abstractNote = {This research reports a theoretical investigation on the role of filtered optical feedback (FOF) in the quantum dot light emitting diode (QD-LED). The underlying dynamics is affected by a sidle node, which returns to an elliptical shape when the wetting layer (WL) is neglected. Both filter width and time delay change the appearance of different dynamics (chaotic and mixed mode oscillations, MMOs). The results agree with the experimental observations. Here, the fixed point analysis for QDs was done for the first time. For QD-LED with FOF, the system transits from the coherence collapse case in conventional optical feedback to a coherent case with a filtered mode in FOF. It was found that the WL washes out the modes which is an unexpected result. This may attributed to the longer capture time of WL compared with that between QD states. Thus, WL reduces the chaotic behavior.},
doi = {10.1063/1.4953651},
journal = {Journal of Applied Physics},
number = 22,
volume = 119,
place = {United States},
year = 2016,
month = 6
}
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