Light Emitting Diodes and Semiconductor Lasers

University of Colorado Boulder via Coursera

Go to Course: https://www.coursera.org/learn/leds-semiconductor-lasers

Introduction

### Course Review: Light Emitting Diodes and Semiconductor Lasers #### Overview As technology continues to shape our lives, understanding the fundamentals of electronic devices has never been more crucial. Coursera's **Light Emitting Diodes and Semiconductor Lasers** course, taught as part of CU Boulder’s Master of Science in Electrical Engineering degree (course code ECEA 5605), stands out as a pivotal opportunity for both aspiring engineers and seasoned professionals seeking to deepen their knowledge in the fascinating field of optoelectronics. #### Course Content The course is structured around a series of modules, each meticulously designed to build on the previous one. Here’s a brief overview of what you can expect: 1. **Semiconductor Fundamentals**: The course kicks off with the essentials of semiconductor physics, setting the stage for understanding how we can manipulate materials to create devices with specific electrical and optical properties. This foundational knowledge is crucial as it forms the backbone for subsequent modules. 2. **Radiative Recombination in Semiconductors**: With the basics under your belt, the course delves into the concept of radiative recombination—the process through which semiconductors emit light. This key principle is vital for grasping how both LEDs and semiconductor lasers function. 3. **Light Emitting Diodes (LEDs)**: Here, the focus shifts to light emitting diodes. You'll learn not just their operational mechanisms, but also how they're embedded into our daily lives. This module is particularly engaging as participants develop a comprehensive understanding of how ubiquitous these devices are. 4. **Fundamentals of Semiconductor Lasers**: In this module, the course evolves to tackle semiconductor lasers, arguably one of the most significant advancements in laser technology. Students will appreciate how compact disc players utilize these lasers, highlighting their impact on modern technology. 5. **Semiconductor Laser Design Principles**: Following the introduction to lasers, you will explore the underlying design principles of semiconductor lasers, demystifying how these devices can be produced at remarkably low costs while retaining efficiency. 6. **Advanced Semiconductor Laser Design Principles**: The course culminates with an exploration of the advanced concepts governing contemporary semiconductor lasers. This module promises to be enlightening and is designed to inspire curiosity about future innovations that might arise in this field. #### Learning Experience The course employs a mix of theoretical lessons and practical applications. Through engaging lectures and challenging homework problem sets, participants will have the chance to apply their knowledge in a hands-on manner, ensuring that theoretical concepts are cemented. The problem sets are designed to provoke critical thinking and mastery of complex topics, enhancing retention and readiness for real-world application. #### Instructor Expertise One of the highlights of this course is the instructor's passion for the subject matter. The enthusiasm for semiconductor technology shines through each module, making the learning process not only educational but also genuinely enjoyable. This engaging teaching style invites students to share that excitement, fostering a community of learners who are equally passionate about the intricacies of optoelectronics. #### Recommendations **Who is this course for?** This course is ideal for graduate students in electrical engineering, researchers in materials science, and professionals interested in the latest advancements in lighting and laser technologies. However, even those new to the field could find value in the comprehensive introduction to semiconductor devices. **Why should you take it?** 1. **Industry Relevance**: With so many applications of LEDs and lasers in modern technology, understanding these principles is essential for anyone in the tech industry. 2. **Credited Learning**: For those pursuing further academic qualifications, this course provides an excellent opportunity to receive academic credit. 3. **Engaging Content**: The combination of solid theoretical foundations with practical applications keeps the learning process dynamic and stimulating. #### Conclusion The **Light Emitting Diodes and Semiconductor Lasers** course on Coursera is a comprehensive and enthralling journey into the world of semiconductors. It offers a unique blend of theory and practical knowledge, guided by an engaging instructor passionate about the subject. By enrolling in this course, you're not only investing in your professional development but also stepping into a field that is at the forefront of technological innovation. Highly recommended for both students and industry professionals looking to enhance their understanding and skills in optoelectronics!

Syllabus

Semiconductor fundamentals

Light emitting diodes and semiconductor lasers is a really special course, and probably one of my favorite. In it, you will learn the fundamental operating principles, design, fabrication techniques and applications of two of the most widely used light emitting devices in the world today - light emitting diodes and semiconductor lasers. For module 1, 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.

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.

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.

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.

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!

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!