Physics And Engineering Of Graded Index Media
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Physics and Engineering of Graded-Index Media
Author: Govind P. Agrawal
language: en
Publisher: Cambridge University Press
Release Date: 2023-08-10
Optical materials with varying refractive indices are called graded-index (GRIN) media and they are widely used within many industries, including telecommunications and medical imaging. Another recent application is space division multiplexing, an enormously improved technique for optical data transmission. This book synthesises recent research developments in this growing field, presenting both the underlying physical principles behind optical propagation in GRIN media, and the most important engineering applications. The principles of wave optics are employed for solving Maxwell's equations inside a GRIN medium, ensuring that diffractive effects are fully included. The mathematical development builds gradually and a variety of exact and approximate techniques for solving practical problems are included, in addition to coverage of modern topics such as optical vortices, photonic spin-orbit coupling, photonic crystals, and metamaterials. This text will be useful for graduate students and researchers working in optics, photonics and optical communications.
LED Lighting
Author: Malvin Carl Teich
language: en
Publisher: Malvin Carl Teich
Release Date: 2025-04-14
LED Lighting is a self-contained and introductory-level book featuring a blend of theory and applications that thoroughly covers this important interdisciplinary area. Building on the underlying fields of optics, photonics, and vision science, it comprises four parts: PART I is devoted to fundamentals. The behavior of light is described in terms of rays, waves, and photons. Each of these approaches is best suited to a particular set of applications. The properties of blackbody radiation, thermal light, and incandescent light are derived and explained. The essentials of semiconductor physics are set forth, including the operation of junctions and heterojunctions, quantum wells and quantum dots, and organic and perovskite semiconductors. PART II deals with the generation of light in semiconductors, and details the operation and properties of III-V semiconductor devices (MQWLEDs & microLEDs), quantum-dot devices (QLEDs & WQLEDs), organic semiconductor devices (OLEDs, SMOLEDs, PLEDs, & WOLEDs), and perovskite devices (PeLEDs, PPeLEDs, QPeLEDs, & PeWLEDS). PART Ill focuses on vision and the perception of color, as well as on colorimetry. It delineates radiometric and photometric quantities as well as various measures of luminous efficacy and efficiency. It also elucidates the significance of commonly used LED lighting metrics, such as the color rendering index (CRI), color temperature (CT), correlated color temperature (CCT), and chromaticity diagram. PART IV is devoted to LED lighting, focusing on its history and salutary features, and on how this modern form of illumination is deployed. It describes the principal components used in LED lighting, including phosphor-conversion LEDs (PCLEDs) for generating cool- and warm-white light, chip-on-board (COB) devices, color-mixing LEDs, LED filaments, retrofit LED lamps, hybrid devices, LED luminaires, and OLED light panels. It concludes with a discussion of smart and connected lighting that reviews plant-centric lighting and highlights the roles of gamma and circadian brain rhythms in human-centric lighting. Finally, the performance metrics for traditional and LED light sources are summarized. Each chapter contains practical examples, highlighted equations, color-coded figures, and an extensive bibliography.
Supercontinuum Generation in Optical Fibers
Author: J. M. Dudley
language: en
Publisher: Cambridge University Press
Release Date: 2010-04-01
The optical fiber based supercontinuum source has recently become a significant scientific and commercial success, with applications ranging from frequency comb production to advanced medical imaging. This one-of-a-kind book explains the theory of fiber supercontinuum broadening, describes the diverse operational regimes and indicates principal areas of applications, making it a very important guide for researchers and graduate students. With contributions from major figures and groups who have pioneered research in this field, the book describes the historical development of the subject, provides a background to the associated nonlinear optical processes, treats the generation mechanisms from continuous wave to femtosecond pulse pump regimes and highlights the diverse applications. A full discussion of numerical methods and comprehensive computer code are also provided, enabling readers to confidently predict and model supercontinuum generation characteristics under realistic conditions.