Dynamics of quantum dot light-emitting diode with filtered optical feedback

Year: 2016

Authors: Al Husseini HB., Al-Naimee K., Khidhir AH., Al-Khursan AH.

Autors Affiliation: Thi Qar Univ, Nassiriya Nanotechnol Res Lab, Coll Sci, Nassiriya 56789, Iraq;‎ Univ Baghdad, Dept Phys, Coll Sci, Baghdad, Iraq; CNR, Ist Nazl Ott, Florence, Italy

Abstract: We study a quantum dot light-emitting diodes (QD-LEDs) subject to filtered optical feedback, where the filter is characterized by a mean frequency Omega(m) and a filter width lambda. In the limit of a narrow filter (lambda = 0), the QD-LED equations reduce under some conditions to the equations for a QD-LED with optical feedback, whereas they become the Lang Kobayashi equations in the limit of an unbounded filter width (lambda > 0). Through simulations based on the rate equations for a QD-LED with filtered external optical feedback modes, we show that the output’s nonlinear dynamical system attractors can be controlled through the filter parameters: the filter’s spectral width lambda and its central frequency Omega(m). This is illustrated for a filter-induced global bistability.


Volume: 6      Pages from: 1  to: 9

KeyWords: Quantum dot; optical feedback; control
DOI: 10.1177/1847980416663673

Citations: 2
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