LEDs and Semiconductor Lasers Course Introduction
You will learn about semiconductor light emitting diodes (LEDs) and lasers, and the important rules for their analysis, planning, design, and implementation. You will also apply your knowledge through challenging homework problem sets to cement your understanding of the material and prepare you to apply in your career.
Course Learning Outcomes
At the end of this course you will be able to…
(1) Design a semiconductor light emitting diode and analyze efficiency
(2) Design a semiconductor laser
(3) Choose suitable semiconductor materials for light emitting devices
Dieser Kurs ist Teil der Spezialisierung Spezialisierung Active Optical Devices
Light Emitting Diodes and Semiconductor Lasers
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Lehrplan - Was Sie in diesem Kurs lernen werden
Woche
13 Stunden zum Abschließen
Semiconductor fundamentals
I am really looking forward to introducing you to the magical world of semiconductors. In this module, we will review the basics of semiconductor physics and you will learn how we can manipulate the materials to tailor electrical and optical properties.
14 Videos (Gesamt 57 min), 3 Lektüren, 2 Quiz
14 Videos
Introduction to Light Emitting Diodes and Semiconductor Lasers1m
Introduction to Semiconductor Fundamentals2m
Energy Bands and Semiconductors5m
Definition of a Semiconductor2m
Density of States7m
Carrier Density5m
Carrier Density, Part II6m
Carrier Density, Part III5m
Intrinsic and Extrinsic Semiconductors4m
Dopant Energy Levels, Part I2m
Dopant Energy Levels, Part II1m
Charge Neutrality, Part I3m
Charge Neutrality, Part II5m
3 Lektüren
Recommended References5m
Reference Values and Equations for Homework10m
MATLAB License5m
2 praktische Übungen
Semiconductor Fundamentals Practice45m
Semiconductor Fundamentals45m
Woche
23 Stunden zum Abschließen
Radiative recombination in semiconductors
In the last module, we learned about the basics of semiconductor physics. In this module, we will apply this knowledge to understand how semiconductors emit light, and the basis for optoelectronic devices such as lasers and light emitting diodes.
15 Videos (Gesamt 51 min), 2 Lektüren, 2 Quiz
15 Videos
Radiative and Non-Radiative Transitions, Part I3m
Radiative and Non-Radiative Transitions, Part II1m
K Selection Rules5m
Direct and Indirect Bandgaps3m
Derivation of Absorption Coefficient2m
Joint Density of States, Direct Bandgap Semiconductor3m
Direct and Indirect Bandgaps, Part II6m
Absorption in Indirect Bandgap Semiconductor3m
Radiative Transition Rate4m
Examples of Radiative Transition Rates in Direct and Indirect Gap Semiconductors40
Minority Carrier Lifetime, Part I3m
Minority Carrier Lifetime, Part II4m
Minority Carrier Lifetime, Part III2m
Radiative Efficiency1m
2 Lektüren
References5m
Reference Values and Equations for Homework #210m
2 praktische Übungen
Radiative Recombination in Semiconductors Practice45m
Radiative Recombination in Semiconductors
Woche
33 Stunden zum Abschließen
Light Emitting Diode (LED)
In the last module, we learned about how semiconductors can emit light. In this module, we will apply this knowledge to learn about the basics of light emitting diodes. These devices are everywhere you turn and you now have the tools to develop a complete understanding of their operation.
14 Videos (Gesamt 38 min), 2 Lektüren, 2 Quiz
14 Videos
PN Junction2m
Current in PN Junction4m
Typical LED Structure1m
LED Losses, Part I3m
Total Internal Reflection2m
LED Losses, Part II58
LED Efficiencies2m
Emission Spectra, Part I3m
Emission Spectra, Part II1m
Carrier Temperature2m
LED Wavelengths3m
Blue LEDs3m
Double Heterostructure LED2m
2 Lektüren
Recommended References5m
Reference Values and Equations for Homework #310m
2 praktische Übungen
Light Emitting Diode (LED) Practice45m
Light Emitting Diode (LED)
Woche
42 Stunden zum Abschließen
Fundamentals of semiconductor lasers
In the last module, we learned about light emitting diodes or LEDs. Now, we will use our knowledge of semiconductors and in particular, radiative recombination, to tackle an even more powerful device, the semiconductor laser. This technology is probably the most successful laser technology of our time, with every compact disc player incorporating a 6-cent semiconductor laser. I hope you enjoy this unit as much as I do.
12 Videos (Gesamt 34 min), 2 Lektüren, 2 Quiz
12 Videos
History of Semiconductor Laser4m
Fundamental Processes in a Semiconductor Laser3m
Non-Equilibrium Carrier Distribution5m
Quasi-Fermi Levels3m
Density of Photons2m
Einstein Coefficients, Part I3m
Einstein Coefficients, Part II3m
Stimulated Emission Rate, Part I3m
Stimulated Emission Rate, Part II52
Gain in Semiconductor Lasers2m
Gain Spectrum28
2 Lektüren
Recommended References5m
Reference Values and Equations for Homework #410m
2 praktische Übungen
Fundamentals of Semiconductor Lasers Practice45m
Fundamentals of Semiconductor Lasers45m
Woche
53 Stunden zum Abschließen
semiconductor laser design principles
In the last module, we learned about the basics of semiconductor lasers. Now, we will extend this knowledge to understand the design principles behind this very successful technology. After the module, you will wonder, as I do, how it is possible to produce a semiconductor laser for 6 cents!
13 Videos (Gesamt 71 min), 2 Lektüren, 2 Quiz
13 Videos
Laser Oscillation, Part I9m
Laser Oscillation, Part II2m
Waveguide Design6m
Effective Index Method, Part I7m
Effective Index Method, Part II9m
Single Mode Condition and Confinement8m
Fermi Level Review2m
Threshold Current, Part I5m
Threshold Current, Part II1m
Photons in Laser Cavity, Part I5m
Photons in Laser Cavity, Part II2m
Above Threshold5m
2 Lektüren
Recommended References5m
Reference Values and Equations for Homework #510m
2 praktische Übungen
Semiconductor Laser Design Principles Practice30m
Semiconductor Laser Design Principles
Woche
63 Stunden zum Abschließen
advanced semiconductor laser design principles
In the last module, we learned about basic design principles for semiconductor lasers. In this module, we will take this one step further and learn about advanced concepts that have enabled the current generation of semiconductor lasers. Stay tuned for the magic!
10 Videos (Gesamt 44 min), 2 Lektüren, 2 Quiz
10 Videos
PN Junction Laser2m
Heterostructure Laser5m
Double Heterostructure Laser1m
Carrier Confinement in Double Heterostructure Laser6m
Leakage Current in Double Heterostructure Laser1m
Quantum Well Lasers7m
Quantum Effects and Density of States, Part I7m
Quantum Effects and Density of States, Part II5m
Multiquantum Structures2m
2 Lektüren
Recommended References5m
Reference Values and Equations for Homework #610m
2 praktische Übungen
Advanced Semiconductor Laser Design Principles Practice
Advanced Semiconductor Laser Design Principles30m
Dozent
Juliet Gopinath
Associate ProfessorElectrical, Computer, and Energy Engineering
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Über die Spezialisierung Active Optical Devices
This Active Optical Devices specialization is designed to help you gain complete understanding of active optical devices by clearly defining and interconnecting the fundamental physical mechanisms, device design principles, and device performance. You will study and gain active experience with light emitting semiconductor devices like light emitting diodes and lasers, nanophotonics, optical detectors, and displays.
Specialization Learning Outcomes:
*Analyze and design semiconductor light sources, and surrounding optical systems
*Analyze and design detection systems for LIDAR, microscopy and cameras
*Analyze and design systems for optical device systems that can adapt to the environment at hand.
*Use lasers and optical electronics in electronic systems through an understanding of the interaction of light and atoms, laser rate equations and noise in photo-detection.
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