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Semiconductor Laser Engineering, Reliability and Diagnostics

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Release : 2013-01-25
Genre : Technology & Engineering
Kind : eBook
Book Rating : 860/5 ( reviews)

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Book Synopsis Semiconductor Laser Engineering, Reliability and Diagnostics by : Peter W. Epperlein

Download or read book Semiconductor Laser Engineering, Reliability and Diagnostics written by Peter W. Epperlein. This book was released on 2013-01-25. 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.

Advanced Laser Diode Reliability

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Release : 2021-07-24
Genre : Technology & Engineering
Kind : eBook
Book Rating : 893/5 ( reviews)

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Book Synopsis Advanced Laser Diode Reliability by : Massimo Vanzi

Download or read book Advanced Laser Diode Reliability written by Massimo Vanzi. This book was released on 2021-07-24. Available in PDF, EPUB and Kindle. Book excerpt: Advanced Laser Diode Reliability focuses on causes and effects of degradations of state-of-the-art semiconductor laser diodes. It aims to provide a tool for linking practical measurements to physical diagnostics. To this purpose, it reviews the current technologies, addressing their peculiar details that can promote specific failure mechanisms. Two sections will support this kernel: a) Failure Analysis techniques, procedures and examples; b) Device-oriented laser modelling and parameter extraction. Talk about Natural continuity with the most widespread existing textbooks, published by Mitsuo Fukuda Present the extension to new failure mechanisms, new technologies, new application fields, new environments Introduce a specific self-consistent model for the physical description of a laser diode, expressed in terms of practically measurable quantities

Accurate Determination of Transparency Current in Packaged Semiconductor Lasers and Semiconductor Optical Amplifiers

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Release : 1994
Genre :
Kind : eBook
Book Rating : /5 ( reviews)

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Book Synopsis Accurate Determination of Transparency Current in Packaged Semiconductor Lasers and Semiconductor Optical Amplifiers by :

Download or read book Accurate Determination of Transparency Current in Packaged Semiconductor Lasers and Semiconductor Optical Amplifiers written by . This book was released on 1994. Available in PDF, EPUB and Kindle. Book excerpt: The reliability of semiconductor laser diodes and related devices is a significant issue for their deployment in many applications, creating demand for device diagnostics applicable to packaged devices. Measurements of the transparency current density (J0) in laser diodes and traveling-wave semiconductor optical amplifiers (SOAs) can provide such a diagnostic. It is essential, however, to measure J0 on packaged devices, so that they can be characterized after aging or degradation. This precludes techniques requiring data from multiple devices (e.g., an ensemble with different lengths). J0 is conventionally measured using a junction-voltage technique, in which an input optical signal induces a change in carrier density in the active region due to stimulated absorption or emission. The result is a voltage drop across the diode. At material transparency, the stimulated absorption is exactly balanced by the stimulated emission and the voltage drop goes to zero. Since the polarity of the voltage drop changes sign at current densities above J0, the optical input beam is typically modulated and lock-in amplification is employed to sensitively detect the polarity sign flip. Here we show that this technique is not reliable for certain types of laser structures, because the deduced J0 is strongly dependent on device packaging -- that is, the measured J0 varies with the manner in which light is coupled into the diode waveguide. For packaged SOAs, we propose and demonstrate an alternative all-optical technique to overcome this problem. One important advantage of the optical method over the junction voltage method is that the actual device optically-guided mode is directly sampled. In the case of packaged semiconductor lasers, our all-optical method can complement the junction-voltage method to resolve device versus packaging degradation.

Integrated Photonics for Data Communication Applications

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Release : 2023-07-26
Genre : Technology & Engineering
Kind : eBook
Book Rating : 31X/5 ( reviews)

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Book Synopsis Integrated Photonics for Data Communication Applications by : Madeleine Glick

Download or read book Integrated Photonics for Data Communication Applications written by Madeleine Glick. This book was released on 2023-07-26. Available in PDF, EPUB and Kindle. Book excerpt: Integrated Photonics for Data Communications Applications reviews the key concepts, design principles, performance metrics and manufacturing processes from advanced photonic devices to integrated photonic circuits. The book presents an overview of the trends and commercial needs of data communication in data centers and high-performance computing, with contributions from end users presenting key performance indicators. In addition, the fundamental building blocks are reviewed, along with the devices (lasers, modulators, photodetectors and passive devices) that are the individual elements that make up the photonic circuits. These chapters include an overview of device structure and design principles and their impact on performance. Following sections focus on putting these devices together to design and fabricate application-specific photonic integrated circuits to meet performance requirements, along with key areas and challenges critical to the commercial manufacturing of photonic integrated circuits and the supply chains being developed to support innovation and market integration are discussed. This series is led by Dr. Lionel Kimerling Executive at AIM Photonics Academy and Thomas Lord Professor of Materials Science and Engineering at MIT and Dr. Sajan Saini Education Director at AIM Photonics Academy at MIT. Each edited volume features thought-leaders from academia and industry in the four application area fronts (data communications, high-speed wireless, smart sensing, and imaging) and addresses the latest advances. Includes contributions from leading experts and end-users across academia and industry working on the most exciting research directions of integrated photonics for data communications applications Provides an overview of data communication-specific integrated photonics starting from fundamental building block devices to photonic integrated circuits to manufacturing tools and processes Presents key performance metrics, design principles, performance impact of manufacturing variations and operating conditions, as well as pivotal performance benchmarks

Optoelectronic Gyroscopes

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Release : 2020-09-19
Genre : Technology & Engineering
Kind : eBook
Book Rating : 803/5 ( reviews)

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Book Synopsis Optoelectronic Gyroscopes by : Kamal Nain Chopra

Download or read book Optoelectronic Gyroscopes written by Kamal Nain Chopra. This book was released on 2020-09-19. Available in PDF, EPUB and Kindle. Book excerpt: The book presents the detailed study of optoelectronic gyroscopes, especially Ring Laser Gyroscopes (RLGs) and Fiber Optic Gyroscopes (FOGs). It discusses their design in detail to optimize their performance, besides explaining the related concepts and the new developments. Other topics covered in this book are double ion beam sputtering for fabricating RLG mirrors on the high quality optical substrates, optical testing, and thin films characterization techniques. The book will be useful for the researchers, professionals, and engineers working in the areas of optical gyroscopes and the related technologies.

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