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Light Emitting Diodes and Semiconductor Lasers

Approx. 16 hours to complete

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Course Summary

This course covers the fundamental concepts of LED and semiconductor lasers, including their properties, operation principles, and applications.

Key Learning Points

Understand the basic principles of LEDs and semiconductor lasers
Learn how to design and fabricate LED and semiconductor laser devices
Explore the applications of LEDs and semiconductor lasers in various fields

Learning Outcomes

Understand the physical principles of LEDs and semiconductor lasers
Gain hands-on experience in designing and fabricating LED and semiconductor laser devices
Explore the various applications of LEDs and semiconductor lasers

Prerequisites or good to have knowledge before taking this course

Basic knowledge of physics and semiconductor materials
Familiarity with basic electronics

Course Difficulty Level

Intermediate

Course Format

Online, self-paced
Video lectures
Hands-on projects

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Notable People in This Field

Physicist and Inventor
Electrical Engineer and Inventor

Related Books

Description

This course can also be taken for academic credit as ECEA 5605, part of CU Boulder’s Master of Science in Electrical Engineering degree.

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

Outline

Semiconductor fundamentals
Active Optical Devices Specialization Introduction
Introduction to Light Emitting Diodes and Semiconductor Lasers
Introduction to Semiconductor Fundamentals
Energy Bands and Semiconductors
Definition of a Semiconductor
Density of States
Carrier Density, Part I
Carrier Density, Part II
Carrier Density, Part III
Intrinsic and Extrinsic Semiconductors
Fermi Levels with Dopants
Dopant Energy Levels, Part I
Dopant Energy Levels, Part II
Charge Neutrality, Part I
Charge Neutrality, Part II
Recommended References
MATLAB License
Semiconductor Fundamentals Practice
Semiconductor Fundamentals

Radiative recombination in semiconductors
Radiative Recombination in Semiconductors
Radiative and Non-Radiative Transitions, Part I
Radiative and Non-Radiative Transitions, Part II
K Selection Rules
Direct and Indirect Bandgaps
Derivation of Absorption Coefficient
Joint Density of States, Direct Bandgap Semiconductor
Direct and Indirect Bandgaps, Part II
Absorption in Indirect Bandgap Semiconductor
Radiative Transition Rate
Examples of Radiative Transition Rates in Direct and Indirect Gap Semiconductors
Minority Carrier Lifetime, Part I
Minority Carrier Lifetime, Part II
Minority Carrier Lifetime, Part III
Radiative Efficiency
References
Radiative Recombination in Semiconductors Practice
Radiative Recombination in Semiconductors

Light Emitting Diode (LED)
Light Emitting Diode (LED)
PN Junction
Current in PN Junction
Typical LED Structure
LED Losses, Part I
Total Internal Reflection
LED Losses, Part II
LED Efficiencies
Emission Spectra, Part I
Emission Spectra, Part II
Carrier Temperature
LED Wavelengths
Blue LEDs
Double Heterostructure LED
Recommended References
Light Emitting Diode (LED) Practice
Light Emitting Diode (LED)

Fundamentals of semiconductor lasers
Fundamentals of Semiconductor Lasers
History of Semiconductor Lasers
Fundamental Processes in a Semiconductor Laser
Non-Equilibrium Carrier Distribution
Quasi-Fermi Levels
Density of Photons
Einstein Coefficients, Part I
Einstein Coefficients, Part II
Stimulated Emission Rate, Part I
Calculating Minimum Intensity Needed for Stimulated Emission
Stimulated Emission Rate, Part II
Gain in Semiconductor Lasers
Gain Spectrum
Recommended References
Fundamentals of Semiconductor Lasers Practice
Fundamentals of Semiconductor Lasers

semiconductor laser design principles
Semiconductor Laser Design Principles
Laser Oscillation, Part I
Laser Oscillation, Part II
Waveguide Design
Effective Index Method, Part I
Effective Index Method, Part II
Single Mode Condition and Confinement
Fermi Level Review
Threshold Current, Part I
Threshold Current, Part II
Photons in Laser Cavity, Part I
Photons in Laser Cavity, Part II
Above Threshold
Recommended References
Semiconductor Laser Design Principles Practice
Semiconductor Laser Design Principles

advanced semiconductor laser design principles
Advanced Semiconductor Laser Design Principles
PN Junction Laser
Heterostructure Laser
Double Heterostructure Laser
Carrier Confinement in Double Heterostructure Laser
Leakage Current in Double Heterostructure Laser
Quantum Well Lasers
Quantum Effects and Density of States, Part I
Quantum Effects and Density of States, Part II
Multiquantum Structures
Recommended References
Advanced Semiconductor Laser Design Principles Practice
Advanced Semiconductor Laser Design Principles

Summary of User Reviews

This course on LEDs and semiconductor lasers is highly recommended by many users. Learners enjoyed the comprehensive and well-organized content that was delivered in an engaging and understandable manner.

Key Aspect Users Liked About This Course

The course content was well-organized and engaging

Pros from User Reviews

Comprehensive course content
Engaging and understandable lectures
Good balance between theoretical concepts and practical applications
Excellent course material and resources
Great instructor with extensive knowledge and experience

Cons from User Reviews

Some learners found the course to be too basic
The pace of the course was slow for some learners
The assignments were too easy for some learners
Some learners felt that the course lacked depth in certain areas
The course may not be suitable for learners with advanced knowledge in the field

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