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Larry A. Coldren,Scott W. Corzine,Milan L. Mashanovitch
Author : Larry A. Coldren,Scott W. Corzine,Milan L. Mashanovitch Publisher : John Wiley & Sons Page : 744 pages File Size : 41,5 Mb Release : 2012-03-02 Category : Technology & Engineering ISBN : 9781118148181
Diode Lasers and Photonic Integrated Circuits by Larry A. Coldren,Scott W. Corzine,Milan L. Mashanovitch Pdf
Diode Lasers and Photonic Integrated Circuits, Second Edition provides a comprehensive treatment of optical communication technology, its principles and theory, treating students as well as experienced engineers to an in-depth exploration of this field. Diode lasers are still of significant importance in the areas of optical communication, storage, and sensing. Using the the same well received theoretical foundations of the first edition, the Second Edition now introduces timely updates in the technology and in focus of the book. After 15 years of development in the field, this book will offer brand new and updated material on GaN-based and quantum-dot lasers, photonic IC technology, detectors, modulators and SOAs, DVDs and storage, eye diagrams and BER concepts, and DFB lasers. Appendices will also be expanded to include quantum-dot issues and more on the relation between spontaneous emission and gain.
Tunable External Cavity Diode Lasers by Cunyun Ye,Tjan Kwang Wei Pdf
Annotation. - Presents a thorough account of the state-of-the-art of tunable external cavity diode lasers Provides an up-to-date survey on physics, technology, and performance of widely applicable coherent radiation sources of tunable external cavity diode lasers May be used as a textbook for related undergraduate and graduate courses.
Starting from the basics of semiconductor lasers with emphasis on the generation of high optical output power the reader is introduced in a tutorial way to all key technologies required to fabricate high-power diode-laser sources. Various applications are exemplified.
Tunable External Cavity Diode Lasers by Ye Cunyun Pdf
This is the first book on tunable external cavity semiconductor diode lasers, providing an up-to-date survey on the physics, technology, and performance of widely applicable coherent radiation sources of tunable external cavity diode lasers. The purpose is to provide a thorough account of the state-of-the-art of tunable external cavity diode lasers which is achieved by combining this account with basic concepts of semiconductor diode lasers and its tunability with monolithic structures. The practical and accessible information in this volume will enable the reader to study external cavity diode laser, to build up the systems of external cavity diode laser as well as to develop advanced systems for their particular applications. This book will appeal to undergraduate and graduate students, scientists and engineers alike. Contents: Basics of Semiconductor Diode LasersTunable Monolithic Semiconductor Diode LasersElements of Tunable External Cavity Diode LasersSystems for Tunable External Cavity Diode LasersImplementation of Tunable External Cavity Diode LasersFrequency Stabilization of Tunable External Cavity Diode LasersApplications of Tunable External Cavity Diode Lasers Readership: Undergraduate & graduate students; researchers; scientists & engineers working in lasers, optics, optic networks and related areas. Keywords:Semiconductor Diode Laser;Tunable Diode Laser;Laser Diodes;Optoelectronic Devices;Principles of LasersKey Features:Presents a thorough account of the state-of-the-art of tunable external cavity diode lasersProvides an up-to-date survey on physics, technology, and performance of widely applicable coherent radiation sources of tunable external cavity diode lasersMay be used as a textbook for related undergraduate and graduate courses
The compact size, reliability, and low cost of diode lasers lead to applications throughout modern technology-most importantly in modern optical telecommunication systems. This book presents a comprehensive introduction to the principles and operation of diode lasers. It begins with a review of semiconductor physics and laser fundamentals, before describing the most basic homojunction laser. Later chapters describe more advanced laser types and their applications, including the most recently developed and exotic laser designs. The author's intuitive style, coupled with an extensive set of worked examples and sample problems, make this an outstanding introduction to the subject.
Tailoring the Emission of Stripe-array Diode Lasers with External Cavities to Enable Nonlinear Frequency Conversion by Andreas Jechow Pdf
A huge number of applications require coherent radiation in the visible spectral range. Since diode lasers are very compact and efficient light sources, there exists a great interest to cover these applications with diode laser emission. Despite modern band gap engineering not all wavelengths can be accessed with diode laser radiation. Especially in the visible spectral range between 480 nm and 630 nm no emission from diode lasers is available, yet. Nonlinear frequency conversion of near-infrared radiation is a common way to generate coherent emission in the visible spectral range. However, radiation with extraordinary spatial temporal and spectral quality is required to pump frequency conversion. Broad area (BA) diode lasers are reliable high power light sources in the near-infrared spectral range. They belong to the most efficient coherent light sources with electro-optical efficiencies of more than 70%. Standard BA lasers are not suitable as pump lasers for frequency conversion because of their poor beam quality and spectral properties. For this purpose, tapered lasers and diode lasers with Bragg gratings are utilized. However, these new diode laser structures demand for additional manufacturing and assembling steps that makes their processing challenging and expensive. An alternative to BA diode lasers is the stripe-array architecture. The emitting area of a stripe-array diode laser is comparable to a BA device and the manufacturing of these arrays requires only one additional process step. Such a stripe-array consists of several narrow striped emitters realized with close proximity. Due to the overlap of the fields of neighboring emitters or the presence of leaky waves, a strong coupling between the emitters exists. As a consequence, the emission of such an array is characterized by a so called supermode. However, for the free running stripe-array mode competition between several supermodes occurs because of the lack of wavelength stabilization. This leads to power fluctuations, spectral instabilities and poor beam quality. Thus, it was necessary to study the emission properties of those stripe-arrays to find new concepts to realize an external synchronization of the emitters. The aim was to achieve stable longitudinal and transversal single mode operation with high output powers giving a brightness sufficient for efficient nonlinear frequency conversion. For this purpose a comprehensive analysis of the stripe-array devices was done here. The physical effects that are the origin of the emission characteristics were investigated theoretically and experimentally. In this context numerical models could be verified and extended. A good agreement between simulation and experiment was observed. One way to stabilize a specific supermode of an array is to operate it in an external cavity. Based on mathematical simulations and experimental work, it was possible to design novel external cavities to select a specific supermode and stabilize all emitters of the array at the same wavelength. This resulted in stable emission with 1 W output power, a narrow bandwidth in the range of 2 MHz and a very good beam quality with M²<1.5. This is a new level of brightness and brilliance compared to other BA and stripe-array diode laser systems. The emission from this external cavity diode laser (ECDL) satisfied the requirements for nonlinear frequency conversion. Furthermore, a huge improvement to existing concepts was made. In the next step newly available periodically poled crystals were used for second harmonic generation (SHG) in single pass setups. With the stripe-array ECDL as pump source, more than 140 mW of coherent radiation at 488 nm could be generated with a very high opto-optical conversion efficiency. The generated blue light had very good transversal and longitudinal properties and could be used to generate biphotons by parametric down-conversion. This was feasible because of the improvement made with the infrared stripe-array diode lasers due to the development of new physical concepts.
High Power Diode Lasers by Friedrich Bachmann,Peter Loosen,Reinhart Poprawe Pdf
This book summarizes a five year research project, as well as subsequent results regarding high power diode laser systems and their application in materials processing. The text explores the entire chain of technology, from the semiconductor technology, through cooling mounting and assembly, beam shaping and system technology, to applications in the processing of such materials as metals and polymers. Includes theoretical models, a range of important parameters and practical tips.
Diode Lasers in Neurosurgery by François-Xavier Roux,Bertrand Devaux Pdf
This book is the result of the authors' many years of experience in using neurosurgical lasers. They began using laser diodes in their speciality at the start of the 1990s, making them pioneers in the field. The first part of the book deals with the general physical bases and comparative bio-tissue effects of the various kinds of surgical laser, safety measures required and legislation concerning powerful lasers. The second part focuses on laser diodes alone. The authors describe in detail how they use them to operate on intracranial and intraspinal tumours, in intraventricular endoscopy, and in surgery involving epilepsy. Details are given of: technical data; the choice of parameters depending on how the lasers are used (contact and non-contact, and the type of lesion being operated on) as well as their indications in neurosurgery. The authors emphasise the practical recommendations that make this book a valuable companion for current and potential users working in neurosurgery and other surgical applications. They also mention the new and future uses of laser diodes which are currently being developed and which show that this equipment really does represent a new generation of lasers. About 100 colour illustrations and tables are used to explain and underscore the authors' points.
Precision Spectroscopy, Diode Lasers, and Optical Frequency Measur by Leo Hollberg Pdf
A selected set of reprints from the Optical Frequency Measurement Group of the Time and Frequency Div. of the Nat. Inst. of Standards and Technology and consists of work published between 1987 and 1997. The 2 programs represented are (1) development of tunable diode-laser technology for scientific applications and precision measurements, and (2) research toward the goal of realizing optical-frequency measurements and synthesis. The papers are organized in 5 categories: diode laser technology; tunable laser systems; laser spectroscopy; optical synthesis and extended wavelength coverage; and multi-photon interactions and optical coherence.
This book is composed of seven invited papers which present the current status of high speed diode lasers. Fast carrier and photon dynamics in directly modulated MQW lasers is analyzed and novel design approaches are considered which were critical for the demonstration and record of 40 GHz modulation bandwidth. Attention is centered on the challenges in creation of high speed and low chirp single mode DFB lasers. Recent progress in mode-locked diode lasers is covered, specifically by the examples of 160 fs pulse generation and appearance of microwave pulse repetition rates. Future trends in increasing of high speed laser performance are also examined.
Monitoring of Gaseous Pollutants by Tunable Diode Lasers by R. Grisar,G. Schmidtke,M. Tacke,G. Restelli Pdf
Proceedings of the International Symposium held in Freiburg, F.R.G., October 17-18, 1988 organized by the Fraunhofer Institut für Physikalische Messtechnik (Freiburg) under the Auspices of the Commission of the European Communities
Analysis of Spatio-Temporal Phenomena in High-Brightness Diode Lasers using Numerical Simulations by Anissa Zeghuzi Pdf
Broad-area lasers are edge-emitting semiconductor lasers with a wide lateral emission aperture. This feature enables high output powers but also diminishes the lateral beam quality and results in their inherently non-stationary behavior. Research in the area is driven by application, and the main objective is to increase the brightness, which includes both output power and lateral beam quality. To understand the underlying spatio-temporal phenomena and to apply this knowledge in order to reduce costs for brightness optimization, a self-consistent simulation tool taking all essential processes into account is vital. Firstly, in this work a quasi-three-dimensional opto-electronic and thermal model is presented that describes essential qualitative characteristics of real devices well. Time-dependent traveling-wave equations are utilized to characterize the inherently non-stationary optical fields, which are coupled to dynamic rate equations for the excess carriers in the active region. This model is extended by an injection-current-density model to accurately include lateral current spreading and spatial hole burning. Furthermore, a temperature model is presented that includes short-time local heating near the active region as well as the formation of a stationary temperature profile. Secondly, the reasons of brightness degradation, i.e. the origins of power saturation and the spatially modulated field profile, are investigated. And lastly, designs that mitigate those effects limiting the lateral brightness under pulsed and continuous-wave operation are discussed. Amongst those designs a novel “chessboard laser” is presented that utilizes longitudinal-lateral gain-loss modulation and an additional phase tailoring to obtain a very low far-field divergence.
Advances in High-Power Fiber and Diode Laser Engineering by Ivan Divliansky Pdf
Advances in High-Power Fiber and Diode Laser Engineering provides an overview of recent research trends in fiber and diode lasers and laser systems engineering. In recent years, many new fiber designs and fiber laser system strategies have emerged, targeting the mitigation of different problems which occur when standard optical fibers are used for making high-power lasers. Simultaneously, a lot of attention has been put to increasing the brightness and the output power of laser diodes. Both of these major laser development directions continue to advance at a rapid pace with the sole purpose of achieving higher power while having excellent beam quality. The book begins by introducing the principles of diode lasers and methods for improving their brightness. Later chapters cover quantum cascade lasers, diode pumped high power lasers, high average power LMA fiber amplifiers, high-power fiber lasers, beam combinable kilowatt all-fiber amplifiers, and applications of 2 μm thulium fiber lasers and high-power GHz linewidth diode lasers. Written by a team of authors with experience in academia and industrial research and development, and brought together by an expert editor, this book will be of use to anyone interested in laser systems development at the laboratory or commercial scale.
This book is composed of seven invited papers which present the current status of high speed diode lasers. Fast carrier and photon dynamics in directly modulated MQW lasers is analyzed and novel design approaches are considered which were critical for the demonstration and record of 40 GHz modulation bandwidth. Attention is centered on the challenges in creation of high speed and low chirp single mode DFB lasers. Recent progress in mode-locked diode lasers is covered, specifically by the examples of 160 fs pulse generation and appearance of microwave pulse repetition rates. Future trends in increasing of high speed laser performance are also examined.