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Über dieses Buch

This textbook provides a thorough and accessible treatment of semiconductor lasers from a design and engineering perspective. It includes both the physics of devices as well as the engineering, designing and testing of practical lasers. The material is presented clearly with many examples provided. Readers of the book will come to understand the finer aspects of the theory, design, fabrication and test of these devices and have an excellent background for further study of optoelectronics.

This book also:

Provides a multi-faceted approach to explaining the theories behind semiconductor lasers, utilizing mathematical examples, illustrations and written theoretical presentations

Offers a balance of relevant optoelectronic topics, with specific attention given to distributed feedback lasers, growth techniques and waveguide cavity design

Provides a summary of every chapter, worked examples, and problems for readers to solve

Incorporates and explains recent breakthroughs in laser design

Inhaltsverzeichnis

Frontmatter

Chapter 1. Introduction: The Basics of Optical Communications

Abstract
In this chapter, the motivation for the study of semiconductor lasers (optical communications) is introduced, and the outline of the book is described.
David J. Klotzkin

Chapter 2. The Basics of Lasers

Abstract
In this chapter, the important common elements of all lasers are introduced. Some examples of lasing systems are given to define how these elements are implemented in practice.
David J. Klotzkin

Chapter 3. Semiconductors as Laser Material 1: Fundamentals

Abstract
The descriptive overview provided in this chapter is a prelude to the mathematical modeling of semiconductor and optical properties that follows in later chapters. Here, we discuss the relevant properties of semiconductor quantum wells from the point of view of applications for semiconductor lasers. First, we introduce the general idea that semiconductor lasers are composed of mixtures of semiconductors designed to select the appropriate lattice constant and bandgap. The physical limits of mixing of different semiconductors are covered. Practical factors that influence the use and fabrication of semiconductors for lasers including factors such as direct and indirect bandgaps, and strain and critical thickness, are discussed.
David J. Klotzkin

Chapter 4. Semiconductors as Laser Materials 2: Density of States, Quantum Wells, and Gain

Abstract
In the previous chapter, we discussed the direct properties of semiconductors that are relevant to lasers, including bandgap, strain, and critical thickness. In this chapter, we talk about the ideal properties of semiconductors and semiconductor quantum wells, including density of states, population statistics, and optical gain, and we develop quantitative expressions for these that are based on ideal models. These will lead up to a qualitative and quantitative expression of optical gain.
David J. Klotzkin

Chapter 5. Semiconductor Laser Operation

Abstract
In the previous chapter, we talked about the ideal properties of semiconductors and semiconductor quantum wells, including density of states, population statistics, and optical gain, and develop expressions for these that are based on ideal models. In this chapter, we will take a step back to see how optical gain and current injection interacts with the cavity and photon density to realize lasing. Finally, we present a simple rate equation model and examine it to see how laser properties such as threshold and slope are predicted. The predictions from the rate equation model are related to the measurements which can be made on these devices to determine fundamental properties of laser material and structure, including internal quantum efficiency and transparency current.
David J. Klotzkin

Chapter 6. Electrical Characteristics of Semiconductor Lasers

Abstract
In this chapter, the electrical characteristics of semiconductor lasers are discussed. The basic operation of pn junction diodes is reviewed, and the ways in which semiconductor lasers are and are not diodes will be enumerated.
David J. Klotzkin

Chapter 7. The Optical Cavity

Abstract
In this chapter, the design and characteristics of a typical semiconductor laser optical cavity are examined. The concept of free spectral range and single longitudinal and spatial modes is defined, and procedures for designing single mode optical cavities are discussed.
David J. Klotzkin

Chapter 8. Laser Modulation

Abstract
In this chapter, the use of lasers for direct modulation transmission at high speeds is discussed. The laser properties that limit the high-speed transmission and the ultimate transmission speed achievable are analyzed.
David J. Klotzkin

Chapter 9. Distributed Feedback Lasers

Abstract
Good quality long distance optical transmission over fiber needs lasers which emit at a single wavelength. This is almost universally realized by putting a wavelength-dependent reflector into the laser cavity, in a distributed feedback laser. In this chapter, the physics, properties, fabrication, and yields of distributed feedback lasers are described.
David J Klotzkin

Chapter 10. Assorted Miscellany: Dispersion, Fabrication, and Reliability

Abstract
In the previous chapters, we have worked from the theory of lasers to the theory of semiconductor lasers, to more details about waveguides, high-speed performance, and single mode devices. In the process of covering these topics in a systematic way, we have ended up with a complete but basic description of a laser and understanding of its operation.
David J. Klotzkin

Backmatter

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