University of Colorado Boulder - Light Emitting Diodes and Semiconductor Lasers 

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 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)

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

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

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

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