Introduction to THz Wave Photonics
Introduction to THz Wave Photonics examines the science and technology related to terahertz wave technologies, taking a dual approach between presenting the field’s history while simultaneously providing an overview of existing technology. The latest rese
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X.-C. Zhang · Jingzhou Xu
Introduction to THz Wave Photonics
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Xi-Cheng Zhang Rensselaer polytechnic lnstitute School of Science Center for Teraheriz Research 110 8th Street Troy NY 12180 USA [email protected]
Jingzhou Xu IMRA America, Inc. 1044 Woodridge Avenue Ann Arbor MI 48105 USA [email protected]
ISBN 978-1-4419-0977-0 e-ISBN 978-1-4419-0978-7 DOI 10.1007/978-1-4419-0978-7 Springer New York Dordrecht Heidelberg London Library of Congress Control Number: 2009939154 © Springer Science+Business Media, LLC 2010 All rights reserved. This work may not be translated or copied in whole or in part without the written permission of the publisher (Springer Science+Business Media, LLC, 233 Spring Street, New York, NY 10013, USA), except for brief excerpts in connection with reviews or scholarly analysis. Use in connection with any form of information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed is forbidden. The use in this publication of trade names, trademarks, service marks, and similar terms, even if they are not identified as such, is not to be taken as an expression of opinion as to whether or not they are subject to proprietary rights. Printed on acid-free paper Springer is part of Springer Science+Business Media (www.springer.com)
Preface
Terahertz (THz) radiation, which is electromagnetic radiation in a frequency interval from 0.3 to 10 THz (1 mm–30 μm wavelength), is the next frontier in science and technology. This band occupies a large portion of the electromagnetic spectrum between the infrared and microwave bands. Basic research, new initiatives, and developments in advanced sensing and imaging technology with regard to the THz band remain unexplored compared to the relatively well-developed science and technology in the microwave and optical frequencies. Historically, THz technologies were used mainly within the astronomy community for studying the background of cosmic far-infrared radiation, and by the laser-fusion community for the diagnostics of plasmas. Since the first demonstration of THz wave time-domain spectroscopy in the late 1980s, there has been a series of significant advances (particularly in recent years) as more intense THz sources and higher sensitivity detectors provide new opportunities for understanding the basic science in the THz frequency range. As developments move forward, THz science will not only have an impact on material characterization and identification but also have potential applications in the fields of communications, imaging, medical diagnosis, health monitoring, environmental control, and chemical and biological sensing, as well as security and quality-control applications. Twenty-first century research in the THz band is one of the most promising areas of study for transformational advances in imaging and other interdisciplinary fields. This book intends to explain the fundamental principles of broadband THz wave generation and detection, highlighting recent advances of no
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