Download or read book Modal Properties of Semiconductor Lasers written by Yann Tanguy and published by . This book was released on 2005 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: The importance of semiconductor lasers has grown steadily over the years, these devices being now essential in a wide range of fields. This includes optical reading and writing of stored data, light source for optical fibres in telecommunications, medical applications, laser printing {u2026} There is an ever expanding need for higher output power and higher brightness from semiconductor devices. This can be achieved with various approaches. Unstable resonators use cavity designs with curved mirrors to yield a highly divergent beam, and counteract the self-focusing tendency of the light in laser materials. These resonators also increase the transverse mode discrimination. Both characteristics improve the beam quality, and make these devices attractive for fibre coupling applications, such as transfer of data for telecommunications. Different cavity geometries with an internal beam waist were tested, and did not display the same behaviour. In some cases we observed a displacement of the beam waist due to thermal lensing, which is not desired for fibre coupling schemes. With modelling and experimental investigations we explained this phenomenon, and proposed some cavity designs to alleviate this problem. The effect of optical feedback in lasers is a common cause of beam deterioration. Feedback on self-pulsing devices is still an important area to explore and comprehend, as this affects applications (such as optical data storage) requiring self-pulsing output powers. Some of the unstable resonators displayed self-pulsing dynamics, and the indluence of optical feedback was analysed, first experimentally, andd then theoretically with a model based on Lang-Kobayashi equations. The appearance of perturbations in the optical intensity is suggested to be linked with transition between limit cycles. The properties of semiconductor materials can also improve the beam quality. Intense research is currently focusing on Quantum Dot (QD) materials, containing nanostructures as small as 10nm which provide a nearly quantised optical gain for lasing action. Many improvements and specific characteristics are expected from these QD devices, particularly an improvement of the spatio-temporal stability of the beam. The transverse modes of broad are QD devices were experimentally examined, and dynamic instabilities characterised. The temperature profile was found to be beneficial to the transverse mode stability. In narrow wave-guide devices, simultaneous lasing in both the low and high energy levels was investigated. Simulations explained the observed decay of the low energy level lasing with increasing current. And strong antiphase dynamics were recorded between the high and low level output powers, at relatively low frequencies (below 50 M H z). Finally, interactions between longitudinal Fabry-Perot modes displayed some interesting and complex features. The output power dynamics were found to be chaotic, and the modal coupling via homogeneous broadening resulted in the appearance of frequency synchronisation. And cross-correlation measurements between modes exhibited a modal switching sequence from blue to red wavelengths, which appear to differ from periodic antiphase dynamics reported for quantum well lasers.
Download or read book Modal Properties and Spontaneous Emission Factor in Unstable Resonator Semiconductor Lasers written by Gang Yao and published by . This book was released on 1994 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Semiconductor Laser Engineering Reliability and Diagnostics written by Peter W. Epperlein and published by John Wiley & Sons. This book was released on 2013-01-25 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reference book provides a fully integrated novel approach to the development of high-power, single-transverse mode, edge-emitting diode lasers by addressing the complementary topics of device engineering, reliability engineering and device diagnostics in the same book, and thus closes the gap in the current book literature. Diode laser fundamentals are discussed, followed by an elaborate discussion of problem-oriented design guidelines and techniques, and by a systematic treatment of the origins of laser degradation and a thorough exploration of the engineering means to enhance the optical strength of the laser. Stability criteria of critical laser characteristics and key laser robustness factors are discussed along with clear design considerations in the context of reliability engineering approaches and models, and typical programs for reliability tests and laser product qualifications. Novel, advanced diagnostic methods are reviewed to discuss, for the first time in detail in book literature, performance- and reliability-impacting factors such as temperature, stress and material instabilities. Further key features include: practical design guidelines that consider also reliability related effects, key laser robustness factors, basic laser fabrication and packaging issues; detailed discussion of diagnostic investigations of diode lasers, the fundamentals of the applied approaches and techniques, many of them pioneered by the author to be fit-for-purpose and novel in the application; systematic insight into laser degradation modes such as catastrophic optical damage, and a wide range of technologies to increase the optical strength of diode lasers; coverage of basic concepts and techniques of laser reliability engineering with details on a standard commercial high power laser reliability test program. Semiconductor Laser Engineering, Reliability and Diagnostics reflects the extensive expertise of the author in the diode laser field both as a top scientific researcher as well as a key developer of high-power highly reliable devices. With invaluable practical advice, this new reference book is suited to practising researchers in diode laser technologies, and to postgraduate engineering students.
Download or read book Physics of Semiconductor Lasers written by B. Mroziewicz and published by Elsevier. This book was released on 2017-01-31 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written for readers who have some background in solid state physics but do not necessarily possess any knowledge of semiconductor lasers, this book provides a comprehensive and concise account of fundamental semiconductor laser physics, technology and properties. The principles of operation of these lasers are therefore discussed in detail with the interrelations between their design and optical, electrical and thermal properties. The relative merits of a large number of laser structures and their parameters are described to acquaint the reader with the various aspects of the semiconductor lasers and the trends in their development.
Download or read book Semiconductor Lasers I written by Eli Kapon and published by Academic Press. This book was released on 1999-01-12 with total page 467 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the device physics of semiconductor lasers in five chapters written by recognized experts in this field. The volume begins by introducing the basic mechanisms of optical gain in semiconductors and the role of quantum confinement in modern quantum well diode lasers. Subsequent chapters treat the effects of built-in strain, one of the important recent advances in the technology of these lasers, and the physical mechanisms underlying the dynamics and high speed modulation of these devices. The book concludes with chapters addressing the control of photon states in squeezed-light and microcavity structures, and electron states in low dimensional quantum wire and quantum dot lasers. The book offers useful information for both readers unfamiliar with semiconductor lasers, through the introductory parts of each chapter, as well as a state-of-the-art discussion of some of the most advanced semiconductor laser structures, intended for readers engaged in research in this field. This book may also serve as an introduction for the companion volume, Semiconductor Lasers II: Materials and Structures, which presents further details on the different material systems and laser structures used for achieving specific diode laser performance features. - Introduces the reader to the basics of semiconductor lasers - Covers the fundamentals of lasing in semiconductors, including quantum confined and microcavity structures - Beneficial to readers interested in the more general aspects of semiconductor physics and optoelectronic devices, such as quantum confined heterostructures and integrated optics - Each chapter contains a thorough introduction to the topic geared toward the non-expert, followed by an in-depth discussion of current technology and future trends - Useful for professionals engaged in research and development - Contains numerous schematic and data-containing illustrations
Download or read book Semiconductor Laser Physics written by Weng W. Chow and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 509 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiconductor-Laser Physics discusses the underlying physics and operational principles of semiconductor lasers. The optical and electronic properties of the semiconductor medium are analyzed in detail, including quantum confinement and gain engineering effects. A semiclassical and a quantum version of the laser theory are presented, including an analysis of single- and multimode operation, instabilities, laser arrays, unstable resonators, and microcavity lasers.
Download or read book Semiconductor Lasers written by Alexei Baranov and published by Elsevier. This book was released on 2013-04-23 with total page 671 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiconductor lasers have important applications in numerous fields, including engineering, biology, chemistry and medicine. They form the backbone of the optical telecommunications infrastructure supporting the internet, and are used in information storage devices, bar-code scanners, laser printers and many other everyday products. Semiconductor lasers: Fundamentals and applications is a comprehensive review of this vital technology.Part one introduces the fundamentals of semiconductor lasers, beginning with key principles before going on to discuss photonic crystal lasers, high power semiconductor lasers and laser beams, and the use of semiconductor lasers in ultrafast pulse generation. Part two then reviews applications of visible and near-infrared emitting lasers. Nonpolar and semipolar GaN-based lasers, advanced self-assembled InAs quantum dot lasers and vertical cavity surface emitting lasers are all considered, in addition to semiconductor disk and hybrid silicon lasers. Finally, applications of mid- and far-infrared emitting lasers are the focus of part three. Topics covered include GaSb-based type I quantum well diode lasers, interband cascade and terahertz quantum cascade lasers, whispering gallery mode lasers and tunable mid-infrared laser absorption spectroscopy.With its distinguished editors and international team of expert contributors, Semiconductor lasers is a valuable guide for all those involved in the design, operation and application of these important lasers, including laser and telecommunications engineers, scientists working in biology and chemistry, medical practitioners, and academics working in this field. - Provides a comprehensive review of semiconductor lasers and their applications in engineering, biology, chemistry and medicine - Discusses photonic crystal lasers, high power semiconductor lasers and laser beams, and the use of semiconductor lasers in ultrafast pulse generation - Reviews applications of visible and near-infrared emitting lasers and mid- and far-infrared emitting lasers
Download or read book Modal Dynamics of Semiconductor Lasers written by Stephen P. Hegarty and published by . This book was released on 1998 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Semiconductor Laser Fundamentals written by Toshiaki Suhara and published by CRC Press. This book was released on 2004-03-16 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ranging from fundamental theoretical concepts to advanced device technologies, this reference/text explores the engineering, characteristics, and performance of specific semiconductor lasers. It defines key principles in electromagnetics, optoelectronics, and laser implementation for novel applications in optical communications, storage, processing
Download or read book Semiconductor Lasers and Herterojunction LEDs written by Henry Kressel and published by Elsevier. This book was released on 2012-12-02 with total page 623 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiconductor Lasers and Heterojunction LEDs presents an introduction to the subject of semiconductor lasers and heterojunction LEDs. The book reviews relevant basic solid-state and electromagnetic principles; the relevant concepts in solid state physics; and the p-n junctions and heterojunctions. The text also describes stimulated emission and gain; the relevant concepts in electromagnetic field theory; and the modes in laser structures. The relation between electrical and optical properties of laser diodes; epitaxial technology; binary III-V compounds; and diode fabrication are also considered. The book further tackles the heterojunction devices of alloys other than GaAs-AlAs; the devices for special applications; distributed-feedback lasers; and the transient effects in laser diodes. Students taking courses in semiconductor lasers and heterojunction LEDs will find the book useful.
Download or read book Principles Of Semiconductor Laser Diodes And Amplifiers Analysis And Transmission Line Laser Modeling written by Hooshang Ghafouri-shiraz and published by World Scientific. This book was released on 2003-12-15 with total page 699 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical communications technology is growing increasingly in importance, with a rapid pace of development. Innovative optical devices have emerged from the integration of semiconductor laser diodes, amplifiers and filters with optical waveguide technology. This well-researched volume traces the evolution of semiconductor laser amplifiers (SLAs) from these technologies. Focusing on the principle applications of SLAs, the author illustrates the growing importance of these functional components in the future of optical communications systems.This book will provide engineering and science students with a basic understanding of laser diode and optical amplification through the analysis of the performance characteristics of these devices both in theory and application. Practising device engineers wishing to consolidate their knowledge in lightwave technology will also find this book an invaluable reference./a
Download or read book Semiconductor Laser Fundamentals written by Weng W. Chow and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: This in-depth title discusses the underlying physics and operational principles of semiconductor lasers. It analyzes the optical and electronic properties of the semiconductor medium in detail, including quantum confinement and gain-engineering effects. The text also includes recent developments in blue-emitting semiconductor lasers.
Download or read book Quantum Confined Laser Devices written by Peter Blood and published by Oxford University Press, USA. This book was released on 2015 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended to take students, final year undergraduates and graduates, and researchers along the path to understand quantum processes in semiconductors, and to enable them, as researchers, to contribute to further advances and inventions.
Download or read book Semiconductor Laser Theory written by Prasanta Kumar Basu and published by CRC Press. This book was released on 2015-06-17 with total page 551 pages. Available in PDF, EPUB and Kindle. Book excerpt: Developed from the authors' classroom-tested material, Semiconductor Laser Theory takes a semiclassical approach to teaching the principles, structure, and applications of semiconductor lasers. Designed for graduate students in physics, electrical engineering, and materials science, the text covers many recent developments, including diode lasers u
Download or read book Analysis and Design of Vertical Cavity Surface Emitting Lasers written by S. F. Yu and published by John Wiley & Sons. This book was released on 2003-09-04 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt: A practical, hands-on guidebook for the efficient modeling of VCSELs Vertical Cavity Surface Emitting Lasers (VCSELs) are a unique type of semiconductor laser whose optical output is vertically emitted from the surface as opposed to conventional edge-emitting semiconductor lasers. Complex in design and expensive to produce, VCSELs nevertheless represent an already widely used laser technology that promises to have even more significant applications in the future. Although the research has accelerated, there have been relatively few books written on this important topic. Analysis and Design of Vertical Cavity Surface Emitting Lasers seeks to encapsulate this growing body of knowledge into a single, comprehensive reference that will be of equal value for both professionals and academics in the field. The author, a recognized expert in the field of VCSELs, attempts to clarify often conflicting assumptions in order to help readers achieve the simplest and most efficient VCSEL models for any given problem. Highlights of the text include: * A clear and comprehensive theoretical treatment of VCSELs * Detailed derivations for understanding the operational principles of VCSELs * Mathematical models for the investigation of electrical, optical, and thermal properties of VCSELs * Case studies on the mathematical modeling of VCSELs and the implementation of simulation programs
Download or read book Semiconductor Lasers written by Govind P. Agrawal and published by American Institute of Physics. This book was released on 1995 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Market: Graduate students and researchers requiring an up-to-date review of current work in semiconductor lasers. "There's plenty to surprise and impress anyone who hasn't been following the semiconductor laser field intently." New Scientist This book fills a major gap in the literature of semiconductor lasers by providing, in a single volume, ten up-to-date review articles written in a pedagogical manner by well-known experts. The topics cover the entire range of current activity in the field. The last two chapters of the book are devoted to applications and are intended to provide a perspective on how the research advances described in earlier chapters eventually translate into commercial products.
Download or read book Theory of Semiconductor Lasers written by Minoru Yamada and published by Springer. This book was released on 2014-04-10 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a unified and complete theory for semiconductor lasers, covering topics ranging from the principles of classical and quantum mechanics to highly advanced levels for readers who need to analyze the complicated operating characteristics generated in the real application of semiconductor lasers. The author conducts a theoretical analysis especially on the instabilities involved in the operation of semiconductor lasers. A density matrix into the theory for semiconductor lasers is introduced and the formulation of an improved rate equation to help understand the mode competition phenomena which cause the optical external feedback noise is thoroughly described from the basic quantum mechanics. The derivation of the improved rate equation will allow readers to extend the analysis for the different types of semiconductor materials and laser structures they deal with. This book is intended not only for students and academic researchers but also for engineers who develop lasers for the market, as the advanced topics covered are dedicated to real problems in implementing semiconductor lasers for practical use.
