Download or read book Coherent Detection at Millimeter Wavelengths and Their Applications written by Pierre Encrenaz and published by . This book was released on 1991 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proceedings of the Winter Workshop held at Les Houches, France, March 1990, describe the present state of technology at millimeter and submillimeter wavelength both on the ground and in space. Emphasis is given to new developments in critical areas (mixers, superconductors, local oscillators, back-ends), and applications of these technologies t
Download or read book Titan written by Athena Coustenis and published by World Scientific. This book was released on 1999 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first book to deal with Titan, one of the most mysterious bodies in the solar system. The largest satellite of the giant planet Saturn, Titan is itself larger than the planet Mercury, and is unique in being the only known moon with a thick atmosphere. In addition, its atmosphere bears a startling resemblance to the Earth's, but is much colder. The American and European space agencies, NASA and ESA, have recently combined efforts to send a huge robot spacecraft to orbit Saturn and land on Titan. This book provides the background to this, the greatest deep space venture of our time, and sets the scene for what may be found when the spacecraft arrives in 2004.
Download or read book Fusion Plasma Diagnostics with mm Waves written by Hans-Jürgen Hartfuß and published by John Wiley & Sons. This book was released on 2013-08-22 with total page 429 pages. Available in PDF, EPUB and Kindle. Book excerpt: Filling a gap in the literature, this introduction to the topic covers the physics of the standard microwave diagnostics established on modern fusion experiments, and the necessary technological background from the field of microwave engineering. Written by well-known mm-wave diagnosticians in the field of fusion physics, the textbook includes such major diagnostic techniques as electron cyclotron emission, interferometry, reflectometry, polarimetry, and scattering.
Download or read book Report of NRL Progress written by Naval Research Laboratory (U.S.) and published by . This book was released on 1973-05 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optical Techniques for Millimeter wave Detection and Imaging written by Christopher Arnim Schuetz and published by ProQuest. This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The benefits of imaging using regions of the electromagnetic spectrum outside the visible range have been known for decades. Infrared and radio frequency imaging techniques have achieved great successes in both military and civilian applications. However, there remains a range of the spectrum between these two regimes that remains relatively unexplored. Millimeter waves, or the range of wavelengths between one millimeter and one centimeter, have remained relatively unexplored as an imaging technology, largely due to the lack of sufficiently sensitive, practical detectors for passive imaging in this regime. At these short wavelengths, the diffraction limit imposed by the limited extent of the imaging aperture significantly limits attainable image resolution. Recent developments in semiconductor low-noise amplifiers have demonstrated many desirable applications for such imaging technology, but have, as yet, not been able to demonstrate the economical, small-format imagers necessary to make such imagers practical in most of the conceived applications. In this regard, I present a new approach to millimeter-wave detection based on optical modulation with subsequent carrier suppression. This approach demonstrates promise in achieving the goal of economical, high-resolution imagers with sufficient sensitivity for passive millimeter-wave imaging. In this thesis, I explain the operational requirements of such detectors, provide theoretical background for their operation, and describe current experimental results obtained using commercially available components in the 35 GHz. In addition, I describe successful efforts to fabricate modulators with improved modulation bandwidths for detection in the 95 GHz atmospheric window. These demonstration systems have attained sufficient single pixel performance to detect thermal emission with a noise equivalent temperature difference (NETD) approaching 1K/[Special characters omitted.] at both 35 and 95 GHz. The NETDs attained correspond to sub-picowatt noise equivalent powers which, to the best of my knowledge, have never before been obtained without the use of millimeter-wave low noise amplifiers or cryogenic cooling. The described optically-based detection technique has also demonstrated unique advantages to overcoming the resolution limits imposed by aperture size. Since the optical upconversion process preserves the phase of the collected energy, coherent imaging methods are possible. This enables the use of distributed aperture imaging, which could potentially provide large effective apertures for high resolution without the associated volumetric scaling associated with traditional focal plane arrays. Optical fiber can be utilized to provide low-loss, dispersion-free routing of the upconverted energy and optical lenses and cameras can be used to reconstruct the sampled image in a relatively simple manner. The combination of these factors offers potential for a uniquely capable millimeter-wave imaging technology based on optical upconversion. As part of this dissertation, I describe the relevant parameters that must be considered in designing such an imager and present results from a prototype array that has been successfully demonstrated.
Download or read book Journal of the Indian Institute of Science written by Indian Institute of Science, Bangalore and published by . This book was released on 1992 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Coherent Optical Wireless Communication Principle and Application written by Xizheng Ke and published by Springer Nature. This book was released on 2023-01-01 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the key technologies of coherent optical wireless communication, covers topics such as beam coupling, signal optical polarization control and distorted wavefront correction. It discusses the principle of coherent optical communication and heterodyne detection conditions. In this book, the array coupling receiving technology and large aperture coupling technology are introduced to realize the spatial optical fiber coupling; simulated annealing algorithm, particle swarm optimization algorithm and SPO algorithm are used to control the polarization state of the signal beam; and the correction of distorted wavefront of the signal beam by adaptive optics technology and wavefront sensorless adaptive optics technology are analyzed, and the influence of beam mode on coherent detection performance is elaborated. Both theoretical deduction and experimental results are included in this book, which can help readers further understand the theoretical knowledge.
Download or read book Infrared and Millimeter Waves V6 written by Kenneth J. Button and published by Elsevier. This book was released on 1982-06-28 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: Infrared and Millimeter Waves is a series of books that compiles the work of several authors, with each volume focusing on certain aspect of infrared and millimeter waves, such as sources of radiation, instrumentation, and millimeter systems. This is particularly related to systems and components. Consisting of six chapters, the book first offers a review of infrared and submillimeter spectroscopy of the atmosphere. The next chapter provides a comprehensive coverage of interferometric spectrometers. Chapter three discusses general principles of infrared detectors, treatment of photon detectors, bolometers, and coherent detectors. The fourth chapter discusses the use of metal-semiconductor junctions as frequency converters. Next, the book reviews quasi-optical techniques at millimeter and submillimeter wavelengths. The last chapter tackles far-infrared and submillimeter-wavelength filters. This book will be of great use to researchers and professionals whose work involves infrared and millimeter waves.
Download or read book Submillimetre Waves and Their Applications written by George W. Chantry and published by Pergamon. This book was released on 1979 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Directions in Terahertz Technology written by J.M. Chamberlain and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: A detailed study of the science, engineering and applications of terahertz technology, based on room-temperature solid-state devices, which are seen as the key technology for wider applications in this frequency range. The relative merits of electronic and optical devices are discussed and new device principles identified. Issues of terahertz circuit design, implementation and measurement are complemented by chapters on current and future applications in communications, sensing and remote surveillance. Audience: The unique coverage of all aspects of terahertz technology will appeal to both new and established workers in the field, as well as providing a survey for the interested reader.
Download or read book Detection of Light written by George H. Rieke and published by Cambridge University Press. This book was released on 2021-05-13 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive, accessible, and physically based description of the approaches currently used to detect light, from X-ray to mm-wave.
Download or read book Infrared to millimeter Wavelength Detectors written by Frank R. Arams and published by Modern Frontiers in Applied Sc. This book was released on 1973 with total page 396 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 1991 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Detectors and Sources for THz and IR written by Fedir F. Sizov and published by Materials Research Forum LLC. This book was released on 2020-05-05 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: IR and THz technologies are widely used in security screening and surveillance, astronomy, spectroscopy, biomedicine, food and package inspection, detection of concealed weapons, vision through camouflage, etc. There are increasing demands for the fast transmission of large amounts of data. THz radiation penetrates dielectric materials like plastics, ceramics or cardboard allowing contact-free testing. Medical imaging technologies can provide guidance for surgeons in delimiting the margins of tumors, help clinicians to visualize diseased areas, etc. Keywords: THz and IR Detectors, THz and IR Sources, Superconducting Photon Detectors, Superconducting THz Detectors, Graphene-based Detectors, THz Sensors with Metamaterials, Photoconductive Antenna Detectors, Imaging, Communication, Spectroscopy, Sensing, Security Screening, Surveillance, Astronomy, Biomedicine, Food Inspection, Package Inspection, Concealed Weapons Detection, Transmission of Large Amounts of Data, Non-destructive Testing, Contact-free Testing, Medical Imaging Technologies.
Download or read book International Journal of Infrared and Millimeter Waves written by and published by . This book was released on 1993-10 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 High Speed Networking written by James P. G. Sterbenz and published by John Wiley & Sons. This book was released on 2002-03-14 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt: Leading authorities deliver the commandments for designing high-speed networks There are no end of books touting the virtues of one or another high-speed networking technology, but until now, there were none offering networking professionals a framework for choosing and integrating the best ones for their organization's networking needs. Written by two world-renowned experts in the field of high-speed network design, this book outlines a total strategy for designing high-bandwidth, low-latency systems. Using real-world implementation examples to illustrate their points, the authors cover all aspects of network design, including network components, network architectures, topologies, protocols, application interactions, and more.
