This session discusses amplification by stimulated emission, a key principle underlying the operation of lasers and other optoelectronic devices.
The first module sets the context and scope of the course, outlining the importance of semiconductor optoelectronics in today's technology landscape. It will provide an overview of the course structure and expectations.
This module covers energy bands in solids, explaining the concept of band theory, the significance of the conduction and valence bands, and how they influence the electrical properties of semiconductors.
In this module, students learn about the E-K diagram, which illustrates the relationship between energy (E) and wave vector (K). The diagram is fundamental for understanding electronic band structure in semiconductors.
The Density of States describes the number of electronic states available to be occupied at each energy level. This module focuses on its significance in determining the electronic properties of semiconductors.
Continuing from the previous module, this session delves deeper into the density of states, providing further insights and applications in semiconductor physics.
This module focuses on the density of states in quantum well structures, explaining how confinement affects electronic properties and the implications for optoelectronic devices.
This session introduces occupation probability and carrier concentration, key concepts in semiconductor physics that determine how charge carriers populate available energy states in semiconductors.
Building on the previous discussions, this module covers the relationship between carrier concentration and the Fermi level, elucidating its crucial role in determining the electrical characteristics of semiconductors.
This module explains the concept of quasi-Fermi levels and their significance in non-equilibrium conditions, such as when semiconductors are subjected to external excitation.
This session provides an overview of various semiconductor materials, discussing their properties, advantages, and applications in optoelectronic devices.
This module discusses semiconductor heterostructures and lattice-matched layers, emphasizing their importance in designing advanced optoelectronic devices with improved performance.
In this session, students will learn about strained-layer epitaxy and quantum well structures, highlighting their role in enhancing the performance of semiconductor devices.
This module introduces bandgap engineering, focusing on how manipulating the bandgap allows for the customization of semiconductor properties for specific applications.
Students will explore heterostructure p-n junctions, discussing their formation, characteristics, and significance in the operation of semiconductor devices.
This module focuses on Schottky junctions and ohmic contacts, explaining their formation, properties, and applications in various semiconductor devices.
In this session, students learn about the fabrication processes of heterostructure devices, including techniques and considerations for achieving desired device performance.
This module introduces the semiconductor laser amplifier, discussing its operation principles, design aspects, and applications in optoelectronic systems.
This module explores the interaction of photons with electrons and holes in semiconductors, providing insights into how these interactions lead to device functionality.
In this session, the optical joint density of states is introduced, emphasizing its role in the behavior of optoelectronic devices and light interactions.
This module covers rates of emission and absorption in semiconductors, explaining their importance in the operation of optoelectronic devices.
This session discusses amplification by stimulated emission, a key principle underlying the operation of lasers and other optoelectronic devices.
The absorption spectrum of semiconductors is studied in this module, emphasizing its significance in understanding material properties and device functionality.
This module covers the gain and absorption spectrum of quantum well structures, highlighting their unique properties and applications in optoelectronic devices.
This session introduces the electro-absorption modulator, explaining its design, operation, and applications in modern communication systems.
Continuing the discussion on electro-absorption modulators, this module covers a second device configuration, providing insight into its performance characteristics and applications.
This mid-term revision module provides students with an opportunity to review key concepts discussed so far and engage in an interactive discussion to clarify doubts.
This module delves into the topic of semiconductor light sources, focusing on various types and their principles of operation.
This session covers the device structure and parameters of light-emitting diodes (LEDs), explaining how these factors influence performance and efficiency.
Continuing the study of LEDs, this module focuses on their characteristics, including current-voltage relationships, efficiency, and spectral output.
This module examines the output characteristics of LEDs, discussing how different configurations affect their performance in various applications.
This session discusses modulation bandwidth in LEDs, emphasizing its importance for high-speed communication applications.
The materials used in LEDs and their applications are discussed in this module, highlighting the significance of material choice for device performance.
This module introduces the basics of lasers, including their fundamental principles, types, and general applications in technology.
In this session, students learn about the device structure of semiconductor lasers, focusing on their design and operational principles.
This module covers the output characteristics of semiconductor lasers, including threshold current, efficiency, and spectral output.
This session discusses single-frequency lasers, explaining how they operate and their significance in precision applications.
Students will learn about Vertical Cavity Surface Emitting Lasers (VCSELs), focusing on their unique structure and applications in modern technology.
This module covers quantum well lasers, discussing their design, operation, and advantages in optoelectronic applications.
This session discusses practical laser diodes, including handling precautions, operation, and integration into electronic systems.
This module focuses on the general characteristics of photodetectors, explaining their role in optoelectronic systems and various applications.
This session covers responsivity and impulse response in photodetectors, explaining how these metrics impact device performance.
This module discusses photoconductors, their working principles, and applications in various sensing technologies.
This session covers semiconductor photodiodes, discussing their structure, operation, and significance in optoelectronic systems.
This module focuses on Avalanche Photodiodes (APD), explaining their operational principles, advantages, and applications in high-speed communication systems.
This session discusses other types of photodetectors, providing an overview of their designs, operations, and applications in various fields.
This module introduces photonic integrated circuits, explaining their design, advantages, and applications in modern optoelectronic systems.