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Optical Engineering

Theoretical stability analysis of quantum dash distributed Bragg reflector lasers
Author(s): Omar Qasaimeh; Hadeel Y. Qasaimeh
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Paper Abstract

A detailed theoretical analysis of stability in a quantum dash distributed Bragg reflector (DBR) laser is presented under the small-signal condition. The influence of p-type doping and inhomogeneous line broadening on the hysteresis width of the quantum dash DBR laser is studied using a rate equation model that includes all of the multidiscrete energy levels in the valence and conduction bands. Our calculations show that a large hysteresis width is obtained by detuning the laser by ~10 meV above the ground state energy and doping the dashes by acceptor concentration NA=3.7×1017 cm-3. Also we find that a large self-pulsation frequency is obtained by detuning the laser by -15 meV from the ground state energy and doping the dashes by NA=2.5×1017 cm-3. The laser hysteresis width can be greatly reduced by doping the dashes with NA>1×1018 cm-3.

Paper Details

Date Published: 1 December 2009
PDF: 7 pages
Opt. Eng. 48(12) 124202 doi: 10.1117/1.3275456
Published in: Optical Engineering Volume 48, Issue 12
Show Author Affiliations
Omar Qasaimeh, Jordan Univ. of Science & Technology (Jordan)
Hadeel Y. Qasaimeh, Jordan Univ. of Science & Technology (Jordan)


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