Search Results for: Principles Of Lasers

Principles of Lasers

Principles of Lasers

Author: Orazio Svelto

Publisher: Springer

ISBN: UOM:39015001335671

Category: Lasers

Page: 396

View: 902

This book is the result of more than ten years of research and teaching in the field of quantum electronics. The purpose of the book is to introduce the principles of lasers, starting from elementary notions of quantum mechanics and electromagnetism. Because it is an introductory book, an effort has been made to make it self­ contained to minimize the need for reference to other works. For the same reason; the references have been limited (whenever possible) either to review papers or to papers of seminal importance. The organization of the book is based on the fact that a laser can be thought of as consisting of three elements: (i) an active material, (ii) a pumping system, and (iii) a suitable resonator. Ac­ cordingly, after an introductory chapter, the next three chapters deal, respectively, with the interaction of radiation with matter, pumping processes, and the theory of passive optical resonators.

Principles of Lasers

Principles of Lasers

Author: Orazio Svelto

Publisher: Springer Science & Business Media

ISBN: 9781441913029

Category: Science

Page: 620

View: 164

This fifth edition of Principles of Lasers includes corrections to the previous edition as well as being the first available as an ebook. Its mission remains to provide a broad, unified description of laser behavior, physics, technology, and applications.

Principles of Laser Materials Processing

Principles of Laser Materials Processing

Author: Elijah Kannatey-Asibu, Jr.

Publisher: John Wiley & Sons

ISBN: 0470459190

Category: Technology & Engineering

Page: 860

View: 918

Coverage of the most recent advancements and applications in laser materials processing This book provides state-of-the-art coverage of the field of laser materials processing, from fundamentals to applications to the latest research topics. The content is divided into three succinct parts: Principles of laser engineering-an introduction to the basic concepts and characteristics of lasers, design of their components, and beam delivery Engineering background&-a review of engineering concepts needed to analyze different processes: thermal analysis and fluid flow; solidification of molten metal; and residual stresses that evolve during processes Laser materials processing-a rigorous and detailed treatment of laser materials processing and its principle applications, including laser cutting and drilling, welding, surface modification, laser forming, and rapid prototyping Each chapter includes an outline, summary, and example sets to help readers reinforce their understanding of the material. This book is designed to prepare graduate students who will be entering industry; researchers interested in initiating a research program; and practicing engineers who need to stay abreast of the latest developments in this rapidly evolving field.

Principles of Laser Dynamics

Principles of Laser Dynamics

Author: Y.I. Khanin

Publisher: Newnes

ISBN: 9780444598875

Category: Technology & Engineering

Page: 407

View: 785

This monograph summarizes major achievements in laser dynamics over the past three decades. The book begins with two introductory Chapters. Chapter 1 offers general considerations on quantum oscillators, formulates the requirements for the laser key elements and shows how these requirements are met in different laser systems. The second Chapter proposes the mathematical models used in semiclassical laser theory, discusses the approximations and simplifications in particular cases, and specifies the range of applicability of these models. In Chapters 3-5 attention is given primarily to the steady states and their stability, the laser behavior in the instability domain, the characteristics of regular and chaotic pulsations and the nature of their mechanisms. Chapter 6 deals with the processes in a laser, accompanying the time variance of laser parameters. Considerable attention is given to a laser response to weak, low-frequency modulation of the parameters. The problems addressed therein are resonant modulation enhancement, transition to the nonlinear regime, chaotic response to periodic impact, spike-like generation due to variation of the cavity geometry and a laser rod temperature drift. Laser behavior is subject to qualitative changes if its optical elements exhibit nonlinear properties. The action of a saturable absorber, which leads to a loss of laser stability and provides passive Q-modulation, is investigated. To a much lesser degree the researchers' attention has been attracted by other nonlinear effects such as self-focusing, e.g., which may have a strong influence on laser dynamics. All of these issues are covered in Chapter 7. The book is intended for researchers, engineers, graduate and post-graduate students majoring in quantum electronics.

Lasers:Principles, Types and Applications

Lasers:Principles, Types and Applications

Author: K. R. Nambiar

Publisher: New Age International

ISBN: 8122414923

Category: Lasers

Page: 798

View: 766

This Book On Lasers Is The Culmination Of Several Years Of Relentless Personal Research, Exhaustive Literature Survey, Critical Analysis Of All The Facets Of The Subject And Interactions With The Subject Experts And Students In India And Abroad, By The Author.This Book Has Been Very Systematically Structured And Organised. The Subject Has Been Divided Into Three Parts. Part A Deals With All The Established Principles And Theories Of Laser Science Prefixed With A Journey Through The Relevant Areas Of Optics And Modern Physics. Part B Presents A Galaxy Of All The Available Laser Schemes Of The Day, With A Peep Into The Future. Part C Deals With The Myriads Of Applications Of This 'Wonder Beam' In Every Walk Of Life.While Giving An Exhaustive Account About Lasers, The Book Also Covers All The, Relevant Aspects Of Related Subjects Such As Fibre Optics, Holography, Laser Safety Etc. Apart From The Excellent Presentation Of The Topics, As They Unfold, This Book Contains A Rich Fund Of Worked Out Examples And Student Exercises, With Answers.The Language Is Simple And Reader-Friendly, The Treatise Logical, And Even The Intricate Mathematical Derivations And Clear And Lucid. This Book Is Meant To Be A Very Valuable Guide To Students At Graduate And Postgraduate Levels And To Those Working Or Intending To Work In The Field Of Lasers, To Add To What They Already Know. This Is Perhaps The Only Book, At Present, On Lasers By An Indian Author With Such A Vast Coverage Of The Subject Itself And The Associated Disciplines.

Distributed Feedback Semiconductor Lasers

Distributed Feedback Semiconductor Lasers

Author: John E. Carroll

Publisher: IET

ISBN: 0852969171

Category: Technology & Engineering

Page: 446

View: 514

Concentrating on presenting a thorough analysis of DFB lasers from a level suitable for research students, this book emphasises and gives extensive coverage of computer aided modeling techniques.

Principles of Laser Spectroscopy and Quantum Optics

Principles of Laser Spectroscopy and Quantum Optics

Author: Paul R. Berman

Publisher: Princeton University Press

ISBN: 9780691140568

Category: Science

Page: 537

View: 649

Principles of Laser Spectroscopy and Quantum Optics is an essential textbook for graduate students studying the interaction of optical fields with atoms. It also serves as an ideal reference text for researchers working in the fields of laser spectroscopy and quantum optics. The book provides a rigorous introduction to the prototypical problems of radiation fields interacting with two- and three-level atomic systems. It examines the interaction of radiation with both atomic vapors and condensed matter systems, the density matrix and the Bloch vector, and applications involving linear absorption and saturation spectroscopy. Other topics include hole burning, dark states, slow light, and coherent transient spectroscopy, as well as atom optics and atom interferometry. In the second half of the text, the authors consider applications in which the radiation field is quantized. Topics include spontaneous decay, optical pumping, sub-Doppler laser cooling, the Heisenberg equations of motion for atomic and field operators, and light scattering by atoms in both weak and strong external fields. The concluding chapter offers methods for creating entangled and spin-squeezed states of matter. Instructors can create a one-semester course based on this book by combining the introductory chapters with a selection of the more advanced material. A solutions manual is available to teachers. Rigorous introduction to the interaction of optical fields with atoms Applications include linear and nonlinear spectroscopy, dark states, and slow light Extensive chapter on atom optics and atom interferometry Conclusion explores entangled and spin-squeezed states of matter Solutions manual (available only to teachers)

Introduction to Biophotonics

Introduction to Biophotonics

Author: Paras N. Prasad

Publisher: John Wiley & Sons

ISBN: 9780471465393

Category: Science

Page: 593

View: 120

Paras Prasad’s text provides a basic knowledge of a broadrange of topics so that individuals in all disciplines can rapidlyacquire the minimal necessary background for research anddevelopment in biophotonics. Introduction to Biophotonics serves asboth a textbook for education and training as well as a referencebook that aids research and development of those areas integratinglight, photonics, and biological systems. Each chapter contains atopic introduction, a review of key data, and description of futuredirections for technical innovation. Introduction to Biophotonicscovers the basic principles of Optics Optical spectroscopy Microscopy Each section also includes illustrated examples and reviewquestions to test and advance the reader’s knowledge.Sections on biosensors and chemosensors, important tools forcombating biological and chemical terrorism, will be of particularinterest to professionals in toxicology and other environmentaldisciplines. Introduction to Biophotonics proves a valuablereference for graduate students and researchers in engineering,chemistry, and the life sciences.

Distributed Feedback Laser Diodes and Optical Tunable Filters

Distributed Feedback Laser Diodes and Optical Tunable Filters

Author: H. Ghafouri-Shiraz

Publisher: John Wiley & Sons

ISBN: 0470856181

Category: Science

Page: 346

View: 818

Advances in optical fibre based communications systems have played a crucial role in the development of the information highway. By offering a single mode oscillation and narrow spectral output, distributed feedback (DFB) semiconductor laser diodes offer excellent optical light sources as well as optical filters for fibre based communications and dense wavelength division multiplexing (DWDM) systems. This comprehensive text focuses on the basic working principles of DFB laser diodes and optical filters and details the development of a new technique for enhanced system performance. Considers the optical waveguiding characteristics and properties of semiconductor materials and the physics of DFB semiconductor lasers. Presents a powerful modelling technique based on the transfer matrix method which can be used to improve the design of laser diodes, optical fibres and amplifiers. Examines the effect of the various corrugation shapes on the coupling coefficients and lasing characteristics of DFB laser diodes. Technical advice to improve immunity against the spatial hole burning effect. Extensive referencing throughout and a comprehensive glossary of symbols and abbreviations. Suitable for both introductory and advanced levels This is an indispensable textbook for undergraduate and postgraduate students of electrical and electronic engineering and physics as it consolidates their knowledge in this rapidly growing field. As a technical guide for the structural design of DFB laser diodes and optical filters, the book will serve as an invaluable reference for researchers in opto-electronics, and semi conductor device physics.

Principles and Practice of Gynecologic Laser Surgery

Principles and Practice of Gynecologic Laser Surgery

Author: Joseph H. Bellina

Publisher: Springer Science & Business Media

ISBN: 9781461327134

Category: Medical

Page: 308

View: 923

One of the first applications of lasers was for surgery on the retina of the eye. That, and the evident analogy to the old dreams of powerful heat rays, led many to predict that lasers would quickly be used for all kinds of cutting and welding, including surgical applications. It was soon apparent that laser sur gery could be performed in ways that caused little bleeding. Nevertheless, other surgical applications have been slower to arrive. One difficulty has been the enormous range of possibilities provided by the many different kinds of lasers. Infrared, visible, and ultraviolet light beams each interact very differently with human tissues. Light pulses of enor mously great peak powers became available from lasers, but their effects dif fered in surprising ways from those obtained with continuous beams. That provided both opportunities (i.e., treating or removing a very thin surface layer without affecting the underlying tissue) and problems with undesired side effects. Moreover, techniques were needed to deliver a precisely con trolled amount of energy just where it was desired. Lasers also had to be engineered and manufactured with the desired power levels and a high reliability.

Principles and Choice of Laser Treatment in Dermatology

Principles and Choice of Laser Treatment in Dermatology

Author: Jae Dong Lee

Publisher: Springer Nature

ISBN: 9789811565564

Category: Medical

Page: 306

View: 108

This book describes the principles of laser treatment in dermatology and, taking into account these principles, provides clinicans with clear, up-to-date guidance on choice of the appropriate laser and parameters for different skin conditions. The aim is to provide a gold standard laser reference book that will meet the needs of those who are already performing laser surgery as well as novices to the field. Readers will find readily understandable coverage of both basic and advanced laser theory. Based on this theory, the authors proceed to explain all the considerations that need to be taken into account when choosing laser systems and parameters for a variety of indications, including all relevant vascular and pigmented lesions and the removal of hair, scars, and tattoos. Close attention is paid to the skin characteristics of Asians and the impacts of these characteristics on parameter selection. In addition, a separate chapter is devoted to the efficacy and safety of laser treatment of melasma, a common disease in Asians.

Principles of Lasers and Optics

Principles of Lasers and Optics

Author: William S. C. Chang

Publisher: Cambridge University Press

ISBN: 0521645352

Category: Science

Page: 260

View: 675

This book describes the fundamental principles of the laser and the propagation of laser radiation in bulk and guided wave components. All solid state, gas, and semiconductor lasers are analyzed as macroscopic devices with susceptibility originating from quantum mechanical interactions. Additional analysis of the unique properties of coherent laser light in optical components is derived from fundamental principles.