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Optical Engineering

Small signal circuit modeling for semiconductor self-assembled quantum dot laser
Author(s): Ashkan Horri; Rahim Faez
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Paper Abstract

In this paper, for the first time, we present a small signal circuit model of InGaAs/GaAs self-assembled quantum dot (QD) laser, based on the standard rate equations. By using the presented model, modulation response of QD laser is investigated. The simulation results show that retarded carrier relaxation due to phonon bottleneck degrades the modulation and impulse responses of a QD laser. It is shown that modulation bandwidth is increased with larger inhomogeneous broadening. Also, our model describes the effects of carrier recombinations inside and outside of a QD region, on the modulation response behavior.

Paper Details

Date Published: 1 March 2011
PDF: 6 pages
Opt. Eng. 50(3) 034202 doi: 10.1117/1.3554394
Published in: Optical Engineering Volume 50, Issue 3
Show Author Affiliations
Ashkan Horri, Islamic Azad Univ. (Iran, Islamic Republic of)
Rahim Faez, Sharif Univ. of Technology (Iran, Islamic Republic of)

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