Laserteknologi og holografi

This research and reference text provides up-to-date coverage of the latest research on hot carriers in semiconductors, with a focus on the background, theoretical approaches, measurements and physical understanding required to engage with the field. Pitched at an introductory level, it equips researchers transitioning from optics to fully understand the role of hot carriers in semiconductors, and is a core text for graduate courses in hot carrier phenomena.

Chemistry of High-Energy Materials continues in this new and revised 6th edition to provide fundamental scientifi c insights into primary and secondary explosives, propellants, rocket fuels and pyrotechnics. It expands with new research developments, including new melt casts, reactive structure materials, a computational study on the detonation velocity of mixtures of solid explosives with non-explosive liquids, calculation of craters after explosions. This work is of interest to advanced students in chemistry, materials science and engineering, as well as to all those working in military and defense technology.

The combustion properties of organic materials are used to assess their safety specifications. This knowledge is necessary to avoid potentially disastrous fires. The experimental determination of the combustion properties of a new organic compound is laborious and sometimes even impossible. This book describes methods for the determination and prediction of the combustion properties of organic compounds, along with some examples and exercises. This 2nd Edition includes an updated and improved presentation of the application of different new models for reliable prediction of diverse aspects of flammability of organic compounds.

Solely devoted to the most recent achievements in the development of different varieties of specialty optical fibers, Optical Fiber Technology and Applications: Recent Advances, documents the cutting-edge work of new material composition and waveguide design-based specialty optical fibers and their photonic devices.

Neuromorphic Photonic Devices and Applications synthesizes in one volume the most critical advances in photonic neuromorphic models, photonic material platforms, and accelerators for neuromorphic computing. It discusses fields and applications that can leverage these new platforms. A brief review of the historical development of the field is provided followed by a discussion of the emerging 2D photonic materials platforms and recent work in implementing neuromorphic models and 3D neuromorphic systems. The application of artificial intelligence such as neuromorphic models to inverse design neuromorphic materials and devices and predict performance challenges is discussed throughout. The book includes a comprehensive overview of the applications of neuromorphic photonic technologies and the challenges, opportunities, and future prospects facing the field. Neuromorphic Photonic Devices and Applications is suitable for researchers and practitioners in academia and R&D in the multi-disciplinary field of photonics.

The book gives the impact of the photoluminescence and study of rare earth doped phosphors for fluorescent lamps, TV tubes, electroluminescent display devices, high quality image intensifiers and SSL (Solid State Lightening), LED (Light Emitting Diode).

The book presents the basic theory of lasers for a beginner and their applications in interdisciplinary field of science and technology.

Internship Report from the year 2017 in the subject Physics - Experimental Physics, grade: 2,0, University of Bayreuth (Physikalisches Institut), course: Physikalisches Praktikum für Fortgeschrittene, language: English, abstract: Lasers are very commonly used in everyday life, e.g. in laser pointers, CD-Players or the lasers used in cash registers. But what makes lasers special and distinguishes them from other light sources? Which advantages do they have and what are their applications in physics? In the experiment "Laser" in the Advanced Physical Practicum the task is to find out which mathematic coherences there are between parameters of the laser and to test how good they match the experimental observation.

A concise volume exploring the basic fundamentals of modern laser communication systems, this book provides comprehensive information from a system designer's point of view. The book provides a thorough review of history, architectures, design methodologies, optical design guidelines, and tracking and communication processes. It explains exactly how to design a laser communication system and its potential applications.

Examining distributed feedback (DFB) laser diodes, this title covers the underlying theory, commercial applications, necessary design criteria and future direction of this technology. The authors offer a description of the various effects that determine DFB laser diode behaviour, and also present modelling approaches, describe DFB laser performance aspects, lay out critical guidelines for DFB laser devices and their use in emerging, high-capacity optical transmission systems.

This comparative tutorial describes the reasons behind device failures and provides practical information on what can be done to minimize failure-prone designs and enhance device reliability. The text demonstrates how, with such advantages as smaller size, low-cost and simple operation, LEDs are well suited for a wide range of applications - especially in the field of optical fibre communication. This book should prove of interest to engineers and scientists in research, design, manufacturing and development of semiconductor lasers, LEDs and optical transmission systems.

This compilation titled "Laser Therapy: Types, Uses, and Safety" focuses on varied aspects of laser (photobiomodulation, PBM) therapy ranging from types of lasers, parameters of optical radiation determining its biological activity and therapeutic action, basic and modern techniques, mitochondrial effects of laser for therapeutics to the clinical use of PBM in treating various medical conditions and its use in surgery. The authors discuss parameters of optical radiation of low intensity determining its biological activity and therapeutic action, basic techniques and modern technologies, and mitochondrial effects of laser therapy. This book provides the most up-to-date information on recent clinical and research trials and clinical uses as well as catalogs the optimal therapeutic settings for a myriad of disease states. The book describes the use of PBM in dentistry, tissue repair and regeneration, treatment of fibromyalgia, muscle fatigue, injury, regeneration and repair, hearing loss, osteoarthritis, neurosurgery, gynecological diseases, snakebite envenomation, acute and chronic respiratory diseases, hypertension, relieving symptoms of exercise-induced muscle damage, venous ulcer healing, treatment of inflammation, and its synergism with physical exercise in treatment of obesity. Further, the role of laser therapy in drug development and in enhancing drug delivery has been discussed. Lastly, we have discussed the evolving role of optogenetics using laser lights in elucidating the molecular mechanism in various pathologies. The authors have critically discussed the uses and side-effects of laser therapy and have highlighted the future directions and approaches to get the best outcome. Altogether, this book will serve as a helpful guide on how PBM could play a role in providing daily care to the patients and enlighten upcoming students and researchers.

Due to their unique flexibility and high reproducibility, lasers have been traditionally used in processes such as cutting, drilling, machining, welding or cladding. In recent years, with the development of ultrafast laser sources, (ie: laser sources emitting pulses with durations ranging from picoseconds to femtoseconds), lasers also emerged as a new and promising tool for the texturing of virtually all kinds of surfaces. In Chapter One, a brief overview of the lasers and techniques utilised in micro- and nano-surface modifications is presented, followed by a detailed discussion of the surface chemistry and topography effect on bacteria aggregation and adhesion. Also, the role of the laser-induced superficial patterns on the response and sensitivity of bio-implants will be explored in depth. Chapter Two reports on cardiovascular laser application by using the open-irrigated ELMA catheter RytmoLas as an intriguing alternative for catheter ablation of arrhythmias. Chapter Three describes a novel feature designed for ELAI in which different colouration codes for the different metals are applied, enabling a good regional allocation of a specific metal within the tissues. Chapter Four focuses on laser ablation processing of metallic and polymeric thin films used in microelectromechanical systems technology for the fabrication of microfluidic devices with integrated electrodes on printed circuit boards (PCB-MEMS). Chapter Five presents typical micro and nanotextured surfaces created by direct irradiation under stationary and non-stationary conditions and the mechanisms behind their development and growth are discussed. Chapter Six describes a novel three-dimensional (3-D) fabrication process of micro-scale shell resonator made of single-crystal diamond (SCD). Chapter Seven discusses the data about structural and morphological characteristics of nano-sized transition-metal oxides of zirconium and molybdenum produced by laser ablation in water.