Laser sources

Although we are well into the fourth decade since the advent of the laser, the number and type of lasers and their wavelength coverage continue to expand. One seeking a photon source is now confronted with an enormous number of possible lasers and laser wavelengths. In addition, various techniques of frequency conversion—harmonic generation, optical parametric oscillation, sum and differencefrequency mixing, and Raman shifting—can be used to enlarge the spectral coverage.
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This book deals with theoretical and experimental aspects of solidstate lasers, including optimum waveguide design of end pumped and diode pumped lasers. Nonlinearity, including the nonlinear conversion, up frequency conversion and chirped pulse oscillators are discussed. Some new rareearthdoped lasers, including double borate and halide crystals, and feedback in quantum dot semiconductor nanostructures are included.
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The ﬂexibility of the transfer matrix method allows one to evaluate the spectral behaviour of a corrugated optical ﬁlter/ampliﬁer and the threshold characteristic of a laser source. To extend the analysis into the abovethreshold biasing regime, the transfer matrix has to be modiﬁed so as to include the dominant stimulated emission. Based on a novel numerical technique, the abovethreshold DFB laser model will be presented in this chapter. Using a modiﬁed transfer matrix, the lasing mode characteristics of DFB LDs will be determined....
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In this book, the performance characteristics of distributed feedback semiconductor laser diodes and optical tunable ﬁlters based on DFB laser structures have been investigated. As discussed in Chapter 1, these lasers can be used as optical sources and local oscillators in coherent optical communication networks, in which a stable single mode (in both the transverse plane and the longitudinal direction) and narrow spectral linewidth become crucial.
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Well known and established techniques, which allow obtaining intense laser pulses, have led to the development of advanced laser system used in science and various industries. Often at times, they combine Qswitching and modelocking techniques in a single device to achieve unprecedented average pulse powers (e.g. HiLASE, HiPER, ELI, NIF, LiFE) for scientific applications, such as secondary sources of EUV, Xray or particles, or as inertial confinement fusion (ICF) drivers.
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Ultraviolet Spectroscopy and UV Lasers covers a range of subjects, from ultraviolet (UV) and vacuum ultraviolet (VUV) sources to the latest advances in instrumentation and techniques for absorption, emission, and fluorescence spectroscopy. The book will prove useful to scientists pursuing spectroscopyrelated research in fields as varied and diverse as optical physics and engineering, analytical chemistry, biology, and laser technology.
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In 2009 the world celebrated 50 years of lasers, bringing to the attention of the public how deeply lasers and laser related technologies have revolutionized both science and everyday life. Next year will be the fiftieth anniversary of the semiconductor laser. Used as a compact light source with high modulation rates, it transformed telecommunications in combination with glass fibers. Today laser diodes are omnipresent in data storage and communication. Still, most of these applications are based on infrared or red laser diodes.
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Communication is a process in which messages, ideas and information can be exchanged between two individuals. From the early days when languages were developed, the methods people use to communicate have experienced a dramatic evolution. Nowadays, rapid transmission of information over long distances and instant access to various information sources have become conspicuous and important features of our society.
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Semiconductor lasers are among the most important optoelectronics devices. Remarkable development has been accomplished in the three decades since the first achievement in roomtemperature continuous oscillation, which opened the possibility of practical applications of semiconductor lasers. Today, various types of semiconductor lasers are massproduced and widely used as coherent light sources for a variety of applications, including optical fiber communication systems and optical disk memory systems....
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Attempts to use lasers in medicine are so numerous and, historically, so diverse, that it proves difficult to describe them all in this chapter. Many laser ideas were introduced experimentally, evaluated clinically and later abandoned, giving way to other concepts in accordance with the availability of laser sources or delivery technologies. This process continues today. The present collection of laser applications thus describes the laser innovations at a given point in time only.
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In the latest decade we have witnessed a tremendous advance in telecommunications technology. With the rapid growth and sophistication of digital technology and computers, communication systems have become more versatile and powerful. This has given a modern communication engineer two key problems to solve: (i) how to handle the everincreasing demand for capacity and speed in communication systems, and (ii) how to tackle the need to integrate a wide range of computers and data sources so as to form a highly integrated communication network with a global coverage....
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Các nguồn bức xạ Nguồn đơn sắc: Lasers, LE Ds Nguồn phổ liên tục: Đèn nóng sáng Nguồn phổ vạch: đèn hồ quang * Incoherent or noise sources: Đèn nóng sáng; LEDS; Đèn hồ quang. → không có quan hệ pha cố định giữa các sóng bức xạ * Coherent sources: Laser khí hoặc laser bán dẫn. * Đèn hồ quang: Hồ quang hình thành giữa các điện cực trong khí hiếm khi áp đặt điện thế ban đầu lớn. Khi dòng ion được thiết lập trong hồ quang, điện áp giảm mạnh và hồ quang được duy trì.
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The Quantum Mechanics Solver 3 uniquely illustrates the application of quantum mechanical concepts to various fields of modern physics. It aims at encouraging the reader to apply quantum mechanics to research problems in fields such as molecular physics, condensed matter physics or laser physics. Advanced undergraduates and graduate students will find a rich and challenging source of material for further exploration. This book consists of a series of problems concerning presentday experimental or theoretical questions on quantum mechanics....
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The Quantum Mechanics Solver 4 uniquely illustrates the application of quantum mechanical concepts to various fields of modern physics. It aims at encouraging the reader to apply quantum mechanics to research problems in fields such as molecular physics, condensed matter physics or laser physics. Advanced undergraduates and graduate students will find a rich and challenging source of material for further exploration. This book consists of a series of problems concerning presentday experimental or theoretical questions on quantum mechanics....
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This edition of Optical Metrology contains a new chapter about computerized optical processes, including digital holography and digital speckle photography. Chapter 2, on Gaussian optics, and Chapter 5, on light sources and detectors, are greatly expanded to include descriptions of standard imaging systems, lightemitting diodes and solidstate detectors. Separate new sections on optical coherence tomography, speckle correlation, the Fast Fourier Transform, temporal phase unwrapping and fibre Bragg sensors are included. Finally, a new appendix about Fourier series is given.
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The Quantum Mechanics Solver 5 uniquely illustrates the application of quantum mechanical concepts to various fields of modern physics. It aims at encouraging the reader to apply quantum mechanics to research problems in fields such as molecular physics, condensed matter physics or laser physics. Advanced undergraduates and graduate students will find a rich and challenging source of material for further exploration. This book consists of a series of problems concerning presentday experimental or theoretical questions on quantum mechanics....
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The Quantum Mechanics Solver 6 uniquely illustrates the application of quantum mechanical concepts to various fields of modern physics. It aims at encouraging the reader to apply quantum mechanics to research problems in fields such as molecular physics, condensed matter physics or laser physics. Advanced undergraduates and graduate students will find a rich and challenging source of material for further exploration. This book consists of a series of problems concerning presentday experimental or theoretical questions on quantum mechanics....
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The field of laser manufacturing has been expanding rapidly in the last 20 years. New materials and new laser sources have considerably increased the potential of laser applications. This expansion has led to a necessity for higher quality and reproducibility when using lasers. To satisfy this demand, a considerable amount of research has been expended into the use of sensing for laser applications.
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The Quantum Mechanics Solver 7 uniquely illustrates the application of quantum mechanical concepts to various fields of modern physics. It aims at encouraging the reader to apply quantum mechanics to research problems in fields such as molecular physics, condensed matter physics or laser physics. Advanced undergraduates and graduate students will find a rich and challenging source of material for further exploration. This book consists of a series of problems concerning presentday experimental or theoretical questions on quantum mechanics....
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The Quantum Mechanics Solver 10 uniquely illustrates the application of quantum mechanical concepts to various fields of modern physics. It aims at encouraging the reader to apply quantum mechanics to research problems in fields such as molecular physics, condensed matter physics or laser physics. Advanced undergraduates and graduate students will find a rich and challenging source of material for further exploration. This book consists of a series of problems concerning presentday experimental or theoretical questions on quantum mechanics....
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