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Author : C. C. Gallagher
Publisher : Unknown
Page : 12 pages
File Size : 50,6 Mb
Release : 1964
Category : Arsenides
ISBN : UOM:39015095124569
Author : Kiyo Tomiyasu
Publisher : Springer
Page : 177 pages
File Size : 44,9 Mb
Release : 2013-11-09
Category : Science
ISBN : 9781489963215
Author : Anonim
Publisher : Unknown
Page : 724 pages
File Size : 53,8 Mb
Release : 1976
Category : Nuclear energy
ISBN : UOM:39015023546313
Author : Mitsuo Fukuda
Publisher : John Wiley & Sons
Page : 452 pages
File Size : 40,7 Mb
Release : 1998-12-24
Category : Science
ISBN : 0471149594
Eine Einführung in das Gebiet der optoelektronischen pn-Halbleiterbauelemente aus den Blickwinkeln der Materialeigenschaften, der Funktionsprinzipien, der Herstellung und Verpackung, der Zuverlässigkeit und der Anwendung. Das Buch ist für Anfänger gedacht, daher sind die Erläuterungen in geeigneter Weise vereinfacht und theoretische Grundlagen wurden zugunsten anwendungsspezifischer Aspekte zum Teil übersprungen. (12/98)
Author : H. G. Unger
Publisher : Elsevier
Page : 197 pages
File Size : 43,8 Mb
Release : 2017-05-04
Category : Science
ISBN : 9781483156712
Introduction to Quantum Electronics is based on a one-semester lecture of electrical engineering for German students. The book is an introduction to the fundamentals of lasers and masers and a presentation of the principles of physics, their theory, and methods of analysis that seek to analyze, explain, and quantify related important phenomena. The properties of a laser is then discussed, the author comparing it to the properties of the maser. Although masers are based on the same physical properties as that of the lasers, masers amplify microwaves by induced emission. How the laser is amplified, its power and frequency of oscillation, and which media are suitable for lasers are analyzed. Descriptions of the laser take more emphasis as it is considered to have more technical applications than the maser. An example given is the operation of the gas laser, because it exhibits coherence in time and space, considered as the most important quality of laser beams. Physicists, students, and academicians in the field of electrical engineering and quantum electronics will find that this book addresses many of their interests.
Author : Anonim
Publisher : Unknown
Page : 612 pages
File Size : 45,9 Mb
Release : 1976
Category : Nuclear energy
ISBN : RUTGERS:39030044059063
Author : Carlo Frevert
Publisher : Cuvillier Verlag
Page : 174 pages
File Size : 51,8 Mb
Release : 2019-07-11
Category : Science
ISBN : 9783736989443
This work focuses on the development of AlGaAs-based diode laser (DL) bars optimized for reaching highest powers and efficiencies at low operation temperatures. Specifically, the quasi continuous wave (QCW) pumping of cryogenically cooled Yb:YAG solid-state lasers is targeted, setting requirements on the wavelength (940 nm), the pulse conditions (pulse length 1.2 ms) and frequency (10 Hz) as well as the lowest DL operating temperature THS ~ 200 K, consistent with economic cooling. High fill-factor bars for QCW operation are to reach high optical performance with optical output powers of P 1.5 kW and power conversion efficiencies of ŋE 60% at these power levels. Understanding the efficiency-limiting factors and the behavior at lower temperatures is necessary to design these devices. Optimizations are performed iteratively in three stages. First, vertical epitaxial designs are studied theoretically, adjusted to the targeted operation temperatures and specific laser parameters are extracted. Secondly, resulting vertical designs are processed into low power single emitters and their electro-optical behavior at low currents is experimentally assessed over a wide range of temperatures. The obtained laser parameters characteristic to the vertical design are then used to extrapolate the laser's performance up to the high targeted currents. Finally, vertical designs promising to reach the targeted values for power and efficiency are processed into high power single emitters and bars which are measured up to the highest currents. Eventually, laser bars are fabricated reaching output powers of 2 kW and efficiencies of 61% at 1.5 kW at an operation temperature of 203 K.
Author : Orazio Svelto
Publisher : Springer Science & Business Media
Page : 636 pages
File Size : 42,6 Mb
Release : 2009-09-29
Category : Technology & Engineering
ISBN : 0306457482
This book is motivated by the very favorable reception given to the previous editions as well as by the considerable range of new developments in the laser field since the publication of the third edition in 1989. These new developments include, among others, quantum-well and muitiple-quantum-welliasers, diode-pumped solid-state lasers, new concepts for both stable and unstable resonators, femtosecond lasers, ultra-high-brightness lasers, etc. This edition thus represents a radically revised version of the preceding edition, amounting essentially to a new book in its own right. However, the basic aim has remained the same, namely to provide a broad and unified description of laser behavior at the simplest level which is compatible with a correct physical understanding. The book is therefore intended as a textbook for a senior-level or first-year graduate course and/or as a reference book. The most relevant additions or changes to this edition can be summarized as follows: 1. A much-more detailed description of Amplified Spontaneous Emission has been given (Chapter 2) and a novel simplified treatment of this phenomenon, both for homogeneous and inhomogeneous lines, has been introduced (Appendix C). 2. A major fraction of a new chapter (Chapter 3) is dedicated to the interaction of radiation with semiconductor media, either in a bulk form or in a quantum-confined structure (quantum-well, quantum-wire and quantum dot). 3.
Author : Herbert Venghaus,Norbert Grote
Publisher : Springer
Page : 873 pages
File Size : 53,9 Mb
Release : 2017-01-20
Category : Science
ISBN : 9783319423678
The book gives an in-depth description of key devices of current and next generation fibre optic communication networks. Devices treated include semiconductor lasers, optical amplifiers, modulators, wavelength filters and other passives, detectors, all-optical switches, but relevant properties of optical fibres and network aspects are included as well. The presentations include the physical principles underlying the various devices, technologies used for their realization, typical performance characteristics and limitations, but development trends towards more advanced components are also illustrated. This new edition of a successful book was expanded and updated extensively. The new edition covers among others lasers for optical communication, optical switches, hybrid integration, monolithic integration and silicon photonics. The main focus is on Indium phosphide-based structures but silicon photonics is included as well. The book covers relevant principles, state-of-the-art implementations, status of current research as well as expected future components.
Author : Hong K. Choi
Publisher : John Wiley & Sons
Page : 418 pages
File Size : 44,5 Mb
Release : 2004-03-18
Category : Science
ISBN : 0471392006
Long-wavelength Infrared Semiconductor Lasers provides a comprehensive review of the current status of semiconductor coherent sources emitting in the mid-to far-infrared spectrum and their applications. It includes three topics not covered in any previous book: far-infrared emission from photo-mixers as well as from hot-hole lasers, and InP-based lasers emitting beyond two micrometers. Semiconductor lasers emitting at more than two micrometers have many applications such as in trace gas analysis, environmental monitoring, and industrial process control. Because of very rapid progress in recent years, until this book no comprehensive information beyond scattered journal articles is available at present.
Author : United States. National Aeronautics and Space Administration
Publisher : Unknown
Page : 450 pages
File Size : 41,5 Mb
Release : 1965
Category : Lasers
ISBN : STANFORD:36105024714516
Author : Anonim
Publisher : Unknown
Page : 304 pages
File Size : 43,6 Mb
Release : 1962
Category : Lasers
ISBN : UVA:X004131814
Author : Anonim
Publisher : Unknown
Page : 322 pages
File Size : 45,8 Mb
Release : 1981-12-31
Category : Science
ISBN : 9789814518871
This is the 1st China's Science Yearbook published since 1949. It covers events, activities and progresses in various fields of science and technology from 1949 to 1979. Published in conjunction with Shanghai Scientific Publishing Co., it was compiled and Editor a research team from 'Nature Magazine', Shanghai, People's Republic of China. Contents:Feature Articles:Development of the Natural Sciences in China over the Past 30 YearsScaling the New Heights of Nuclear Science and TechnologyReview of Acoustics Research in ChinaTwenty Years of the Institute of Semiconductors — A SurveyChina's First LaserAdvances in Biochemistry and Molecular Biology in ChinaRecent Advances of Chinese PalaeoanthropologyBrilliant Achievements of Palaeontological Research in ChinaNew Features of the Earthquake Science in ChinaA Survey on the Developments of Mathematics in New ChinaA Theory of Polymerization of Silicic Acid in Aqueous SolutionRecent Development in the Study of Theoretical Organic Chemistry in ChinaA Survey on Astronomy Research in New ChinaOn the Advances and Developments of Weather Prediction in ChinaNew Features of the Earthquake Science in ChinaA Summary of Marine Research in ChinaWinding Roads and a Quake Science in ChinaA Summary of Marine Research in ChinaWinding Roads and a Bright Future — 30 Years of Chinese PsychologyA Brief Introduction to Traditional Chinese MedicineCommemorating the Centenary of the Birth of the Great Scientist, Albert EinsteinReference Section:A Chronicle of Events in Science and TechnologyBrief Introduction to Periodicals and Newspapers of the Natural SciencesName List of Members of Academia Scinica DepartmentsList of Past ScientistsPrizes and Certificates of Merit in Science Readership: General readers interested in history of science. Review: “This is a useful book … it is a review of China's Science and technology by some of China's most prestigious scientists. The second half consists of a variety of useful reference materials.” Science
Author : United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch
Publisher : Unknown
Page : 1080 pages
File Size : 40,9 Mb
Release : 1985
Category : Science
ISBN : CORNELL:31924004930727
Author : Gerald B. Stringfellow
Publisher : CRC Press
Page : 680 pages
File Size : 41,7 Mb
Release : 2020-11-25
Category : Science
ISBN : 9781000112252
Gallium Arsenide and Related Compounds 1991emphasizes current results on the materials, characterization, and device aspects of a broad range of semiconductor materials, particularly the III-V compounds and alloys. The book is a valuable reference for researchers in physics, materials science, and electronics and electrical engineering who work on III-V compounds.