Course

PHYS-434: Physics of photonic semiconductor devices

Summary

Series of lectures covering the physics of quantum heterostructures, dielectric microcavities and photonic crystal cavities as well as the properties of the main light emitting devices that are light-emitting diodes (LEDs) and laser diodes (LDs).

Lectures

Instructor

Nicolas Grandjean

Nicolas Grandjean received a PhD degree in physics from the University ofNice Sophia Antipolis in 1994 and shortly thereafter joined the French National Center for Scientific Research (CNRS) as a permanent staff member. In 2004, he was appointed tenure-track assistant professor at the École polytechnique fédérale de Lausanne (EPFL) where he created the Laboratory for advanced semiconductors for photonics and electronics. He was promoted to full professor in 2009. He was the director of the Institute of Condensed Matter Physics from 2012 to 2016 and then moved to the University of California at Santa Barbara where he spent 6 months as a visiting professor. Since 2018, he is the head of the School of Physics at the EPFL. He was awarded the Sandoz Family Foundation Grant for Academic Promotion, received the “Nakamura Lecturer” Award in 2010, the "Quantum Devices Award” at the 2017 Compound Semiconductor Week, and “2016 best teacher” award from the EPFL Physics School. His research interests are focused on the physics of nanostructures and III-V nitride semiconductor quantum photonics.

Official source

https://edu.epfl.ch/coursebook/en/physics-of-photonic-semiconductor-devices-PHYS-434

Moodle Page

http://go.epfl.ch/PHYS-434

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Summary

Lectures

Instructor

Nicolas Grandjean

Official source

https://edu.epfl.ch/coursebook/en/physics-of-photonic-semiconductor-devices-PHYS-434

Moodle Page

http://go.epfl.ch/PHYS-434

Lectures in this course (14)

Physics of Photonic Semiconductor Devices

Explores the physics of photonic semiconductor devices, including LEDs, laser diodes, and quantum cascade lasers, emphasizing essential concepts and practical applications.

Efficiency of LEDs: Fabrication and Comparison

Explores LED efficiency, fabrication, and comparison with alternative light sources, emphasizing the importance of the color rendering index.

Physics of Photonic Semiconductor Devices: LEDs and Laser Diodes

Explores the limitations of blue LEDs' efficiency and the efficiency droop in laser diodes.

Semiconductor Laser Diodes

Explores electrical injection in semiconductors, transparency, laser oscillations, and edge-emitting laser diode design.

Quantum Well Laser Diodes

Explores optimizing quantum well laser diodes, edge emitting laser diodes' beam properties, optical gain measurements, laser mode spacing, and the Schawlow-Townes linewidth formula.

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