Download or read book Design of Long wavelength Detectors for High Efficiency and High Speed Operation written by Xuzhi He and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The infrared detectors have made enormous progress in increasing the operating temperature from low to considerably high operating temperatures. Although it is possible to operate Mid-Wavelength (MW) detectors at room temperature, Long-Wavelength (LW) detectors still need considerable research and development work. The trend predicts that operating temperature close to the ambient condition will be achieved in the future. In this thesis, a new paradigm of enhancing light absorption in the PIN detector would be investigated and applied to traditional HgCdTe barrier detectors to improve absorption efficiency, reducing noise, and increasing operating temperature. HgCdTe material offers the following advantages: (i) Tunable bandgap enable absorbing 1[mu]m-30[mu]m spectrum, (ii) Higher absorption coefficient than most infrared detector materials, (iii) High operating temperature. The cut-off wavelength divides the absorption spectrum into two regions: Kane and Urbach. The former had been fully investigated in the past decades, and many high-performance devices have been developed, whereas the latter one remained an engineering challenge. In this thesis, we would focus on enhancing the absorption spectrum in the Urbach region of HgCdTe by designing different single-pixel structures using a novel light trapping technology to enhance photon absorption significantly. This novel method is simple yet powerful. An array of microscale holes will be designed on the photodiodes' surface to redirect normally incident light into lateral orientated propagating waves along the photodiodes' plane. This thereby maintains a thin intrinsic region in the photodiodes with a high 'vertical' electric field and short drift-time (creating fast photodiodes) while also keeping the absorption high. Thus, it is possible to exploit the larger lateral dimensions of the photodiode to increase the devices' effective absorption. The holes help reduce the total surface area of the devices, contributing to reduced material volume and consequently lower leakage current. With less dark current, the noise can be reduced, and the operating temperature can be raised. This is how uncooled, low-noise and high quantum efficiency infrared detectors can eventually be realized.

Download or read book Infrared Detectors written by Antonio Rogalski and published by CRC Press. This book was released on 2010-11-15 with total page 900 pages. Available in PDF, EPUB and Kindle. Book excerpt: Completely revised and reorganized while retaining the approachable style of the first edition, Infrared Detectors, Second Edition addresses the latest developments in the science and technology of infrared (IR) detection. Antoni Rogalski, an internationally recognized pioneer in the field, covers the comprehensive range of subjects necessary to un

Download or read book Femtosecond Technology written by Takeshi Kamiya and published by Springer Science & Business Media. This book was released on 1999 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent rapid advances in femtosecond technology have had a great impact on its industrial applications, including ultrafast optoelectronic devices and optical. telecommunication systems, ultrashort-pulse lasers and measurement systems, and the development of novel materials for ultrafast functions. In this book, a wealth of knowledge covering requirements for applications as well as details of recent achievements in important technical areas is presented by internationally renowned authors in a concise, systematic form. As a whole, this is the first comprehensive book on the emerging field of femtosecond technology.

Download or read book Springer Handbook of Electronic and Photonic Materials written by Safa Kasap and published by Springer. This book was released on 2017-10-04 with total page 1536 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second, updated edition of this essential reference book provides a wealth of detail on a wide range of electronic and photonic materials, starting from fundamentals and building up to advanced topics and applications. Its extensive coverage, with clear illustrations and applications, carefully selected chapter sequencing and logical flow, makes it very different from other electronic materials handbooks. It has been written by professionals in the field and instructors who teach the subject at a university or in corporate laboratories. The Springer Handbook of Electronic and Photonic Materials, second edition, includes practical applications used as examples, details of experimental techniques, useful tables that summarize equations, and, most importantly, properties of various materials, as well as an extensive glossary. Along with significant updates to the content and the references, the second edition includes a number of new chapters such as those covering novel materials and selected applications. This handbook is a valuable resource for graduate students, researchers and practicing professionals working in the area of electronic, optoelectronic and photonic materials.

Download or read book Infrared and Terahertz Detectors Third Edition written by Antoni Rogalski and published by CRC Press. This book was released on 2019-01-10 with total page 1044 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition of Infrared and Terahertz Detectors provides a comprehensive overview of infrared and terahertz detector technology, from fundamental science to materials and fabrication techniques. It contains a complete overhaul of the contents including several new chapters and a new section on terahertz detectors and systems. It includes a new tutorial introduction to technical aspects that are fundamental for basic understanding. The other dedicated sections focus on thermal detectors, photon detectors, and focal plane arrays.

Download or read book Advances in Photodetectors written by Kuan Chee and published by . This book was released on 2019-09-18 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a wide-ranging overview of the current state-of-the-art and new trends in photodetector design and research. Written by a team of internationally renowned experts, with contributions from universities, research institutes and industries, this work is suitable for students and professionals interested in studying and dealing with photodetector design and technology, as well as the wide gamut of related applications. Its coverage includes: physics and fundamentals of photodetectors; physical models of photodetector operation; new materials, design, processing and function of photodetectors in related applications; testing, monitoring and calibration; and research progress in photodetector-related areas. Theoretical aspects, design and simulation principles, and important experimental results are thoroughly addressed, embodying a comprehensive account of current activity in this important field of research and industry.

Download or read book Proceedings of the Third International Symposium on Long Wavelength Infrared Detectors and Arrays Physics and Applications III written by Sheng S. Li and published by The Electrochemical Society. This book was released on 1995 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Photodetectors and Fiber Optics written by Hari Singh Nalwa and published by Gulf Professional Publishing. This book was released on 2001-02-26 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photodetectors and Fiber Optics is an outgrowth of the recently published 10-volume set Handbook of Advanced Electronic and Photonic Materials and Devices. The objective of this book is to present a highly coherent coverage of photodetectors and optical fibers. This book overs a broad spectrum of photodetectors, including types of materials, their fabrication, physical properties, and industrial applications. Many industries around the world are engaged in developing fiber optics technology for the new millennium. The applications of photodetectors in fiber optics and the role of optical fibers in present communication technology are extensively discussed. Covers a broad spectrum of the photodetectors Include types of materials, their fabrication, physical properties and industrial applications Applications of photodetectors in fiber optics Role of optical fibers in present communication technology A very special topic presented in a timely manner and in a format

Download or read book Long Wavelength Infrared Detectors written by Manijeh Razeghi and published by CRC Press. This book was released on 2020-03-09 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: This timely work presents a comprehensive overview of the development of new generations of infrared detectors based on artificially synthesized quantum structures. The growth of quantum wells and superlattices is well documents in this volume, as are the principal new superlattice technologies for long wavelength infrared detection. Featuring insightful contributions from researchers working at the "cutting edge" of this exciting field, this volume is sure to become an essential reference for advanced graduate students and researchers alike.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1974 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Optical Wireless Communications written by Roberto Ramirez-Iniguez and published by CRC Press. This book was released on 2008-04-03 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the last three decades, interest in Infrared (IR) technology as a medium to convey information has grown considerably. This is reflected by the increasing number of devices such as laptops, PDAs, and mobile phones that incorporate optical wireless transceivers and also by the increasing number of optical wireless links available for indoor and

Download or read book Proceedings written by and published by . This book was released on 1996 with total page 1500 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spotlight on Artificial Intelligence AI for Sustainable Plant Production written by Aitazaz Ahsan Farooque and published by Frontiers Media SA. This book was released on 2024-03-15 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Agricultural industry is always at risk - crops are affected by weather, diseases and pests. When a global pandemic hits suddenly, it becomes very difficult to manage various processes because most are not digital. In parallel, the rapid increase in the population and urbanization, demands more food production on less land. Farming under the demand pressure by increasing input consumption, leads to increases costs and negative impacts to the environment such as decreasing soil fertility continuously over time. There is therefore the need to move beyond traditional farming. To produce more yield in the agricultural field, there is the need to dig deep into the technological field and apply sensors, Internet of Things (IoT), big data analytics, cloud computing and machine learning (ML) and deep learning (DL) techniques. Better decision making, prediction and reliability depend upon high level of knowledge base and perceptions.

Download or read book Design of High Speed and High Efficiency Single Photon Detectors Using Silicon Avalanche Photodiodes written by and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NASA Technical Memorandum written by and published by . This book was released on 1992 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hyperspectral Satellites and System Design written by Shen-En Qian and published by CRC Press. This book was released on 2020-04-22 with total page 865 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hyperspectral Satellites and System Design is the first book on this subject. It provides a systematic analysis and detailed design of the entire development process of hyperspectral satellites. Derived from the author’s 25-year firsthand experience as a technical lead of space missions at the Canadian Space Agency, the book offers engineers, scientists, and decision-makers detailed knowledge and guidelines on hyperspectral satellite system design, trade-offs, performance modeling and simulation, optimization from component to system level, subsystem design, and implementation strategies. This information will help reduce the risk, shorten the development period, and lower the cost of hyperspectral satellite missions. This book is a must-have reference for professionals in developing hyperspectral satellites and data applications. It is also an excellent introductory book for early practitioners and students who want to learn more about hyperspectral satellites and their applications.