Theoretical comparison between HgCdTe and AlGaAs Heterostructure quantum well laser systems
Other Title(s)
مقارنة نظرية بين HgCdTe و AlGaAs لنظامي البئر الكمي الليزري ذوي التركيبين غير المتجانسين
Dissertant
Thesis advisor
University
University of Baghdad
Faculty
College of Education for Puresciences-IBN al-Haitham
Department
Department of Physics
University Country
Iraq
Degree
Master
Degree Date
2016
English Abstract
This work is description of theoretical comparison between two systems Hg(f 2^dij QTe/Hgij -Cdij -Te for heterostructure quantum well laser.
Where studied the effects of the variation parameters for this structure such as a well width, barrier width for Single and Multi-Quantum Well, on laser parameters such as optical confinement factor, threshold current, threshold current density, optical gain, output power and efficiency.
In addition we studied the density of states for quantum well.
The optical confinement factor has the best value (0.308) for Altj^GatjjAs/GaAs 3QWs at (Pf=21.5nm) and (0.0224) for Hgiy2Cdiy3Te/Hgiy-Cdiy-Te 5QWs at (Pf=11.3nm).
It introduced a significant improvement in MQW is much higher than SQW for two systems.
The results showed that optical confinement factor of 3QW are much higher (by a factor 18) for and (by a factor 25) for HgQ 2CdQ QTe/HgQ -Cd^ - Te 5QW, from optical confinement factor of SQW.
This investigated for improve the work of laser diode device through the effect of optical confinement factor on the gain, threshold current, output power and efficiency under forward bias in active region, where threshold current density ItkAiGaAs = S7Q4 A/crn^, JthugcdTe = 1^27 Afcw} with efficiency (89%for gGa^^As/GaAs and 97% for ^3o.2Cdo.J^i^3!>.s(^do.sT'^)
Main Subjects
No. of Pages
101
Table of Contents
Table of contents.
Abstract.
Abstract in Arabic.
Chapter One : Literature review.
Chapter Two : Theoretical investigation.
Chapter Three : Results and discussion.
Chapter Four : Conclusion and future work.
References.
American Psychological Association (APA)
al-Zubaydi, Widyan Kazim Abd. (2016). Theoretical comparison between HgCdTe and AlGaAs Heterostructure quantum well laser systems. (Master's theses Theses and Dissertations Master). University of Baghdad, Iraq
https://search.emarefa.net/detail/BIM-737728
Modern Language Association (MLA)
al-Zubaydi, Widyan Kazim Abd. Theoretical comparison between HgCdTe and AlGaAs Heterostructure quantum well laser systems. (Master's theses Theses and Dissertations Master). University of Baghdad. (2016).
https://search.emarefa.net/detail/BIM-737728
American Medical Association (AMA)
al-Zubaydi, Widyan Kazim Abd. (2016). Theoretical comparison between HgCdTe and AlGaAs Heterostructure quantum well laser systems. (Master's theses Theses and Dissertations Master). University of Baghdad, Iraq
https://search.emarefa.net/detail/BIM-737728
Language
English
Data Type
Arab Theses
Record ID
BIM-737728
