THz and Security Applications

These proceedings comprise invited papers from highly experienced researchers in THz technology and security applications.

THz and Security Applications

These proceedings comprise invited papers from highly experienced researchers in THz technology and security applications. THz detection of explosives represents one of the most appealing technologies to have recently emerged in dealing with terrorist attacks encountered by civil security and military forces throughout the world. Discussed are the most advanced technologies and developments, the various points of operational strength and weaknesses as well as are suggestions and predictions the best technological solutions to overcome current operational limits. The current status of various levels of cooling in THz detectors, sources and associated electronics are also addressed. The goal was to provide a clear view on the current technologies available and the required advances needed in order to achieve more efficient systems. This goal was outlined in part by establishing the baseline of current uncertainty estimations in physics-based modelling and the identification of key areas which require additional research and development.

Terahertz Science And Technology For Military And Security Applications

The inherent advantages and potential payoffs of the THz regime for military and
security relevant applications have long stood as an important driver of interest in
this science and technology area. For example, this extremely expansive and ...

Terahertz Science And Technology For Military And Security Applications

The inherent advantages and potential payoffs of the terahertz (THz) regime for military and security applications serve as an important driver for interest in new THz-related science and technology. In particular, the very rapid growth in more recent years is arguably most closely linked to the potential payoffs of THz sensing and imaging (THz-S&I).This book presents some of the leading fundamental research efforts towards the realization of practical THz-S&I capabilities for military and security applications. Relevant subjects include theoretical prediction and/or measurement of THz spectroscopic phenomenon in solid-state materials such as high explosives (e.g. HMX, PETN, RDX, TNT, etc.), carbon-fiber composites, biological agents (e.g. DNA, RNA, proteins, amino acids) and organic-semiconductor nanostructures. Individual papers also address the effective utilization of state-of-the-art THz-frequency technology in military and security relevant scenarios such as standoff S&I, screening of packages and personnel, and perimeter defense. Technical papers introduce novel devices and/or concepts that enhance THz source and detector performance, enabling completely new types of sensor functionality at THz frequency (e.g. detection at nanoscale/molecular levels), and defining new and innovative sensing modalities (e.g. remote personnel identification) for defense and security. Therefore, the collective research presented here represents a valuable source of information on the evolving field of THz-S&I for military and security applications.

THz Identification for Defense and Security Purposes

to implement a field (portable) version of the considered explosive sensor,
improvements in both the THz laser sources and detectors are required. ... Lastly,
one of the biggest challenges to THz security applications is stand-off detection.

THz Identification for Defense and Security Purposes

The principal aim of this book is to provide the reader with the understanding of the possibilities and features of THz identification as opposed to more traditional techniques such as X-rays, microwaves, etc. by elucidating and illustrating the principles of THz identification and its applications in a systematical way. Its scope includes a description of the physical principles of THz generation, transmission and detection, as well as of the applications of THz identification.The inherent advantages and potential benefits of the terahertz (THz) phenomenon, potential that encompasses various aspects such as THz sensing, imaging and material properties investigation with THz radiation for Defense (military) and security applications serve as an important stimulus for the interest in emerging THz science and technology, in particular, the very rapid growth of this new field.This text presents some of the leading fundamental research efforts towards the realization of practical THz devices applications for military and security applications. Relevant chapters contain fundamentals and/or measurements of THz radiation in solid-state materials such as high explosives (e.g. HMX, PETN, RDX, etc.), biological tissues and organic-semiconductor nanostructures. Individual chapters also address the present capabilities of THz equipment for the effective utilization of screening packages and personnel. This book contains descriptions and analyses of the most innovative research in the field; the presented material introduces novel devices and/or concepts that enhance THz source and detector performance OCo enabling completely new types of sensor performance at THz frequency (e.g. detection at molecular and nanoscale levels), and defining innovative sensing modalities (e.g. remote object and personnel identification) for defense and security.

Advances in Sensing With Security Applications

The utility of the MMW and THz spectral bands in sensing for security
applications is limited by two major issues: (1) the atmospheric transmission in
these bands limits their usefulness for remote sensing at ranges greater than a
few meters ...

Advances in Sensing With Security Applications

The fusion of basic ideas in mathematics, biology, and chemistry with ongoing improvements in hardware and computation offers the promise of much more sophisticated and accurate sensing capabilities than currently exist. Coupled with the dramatic rise in the need for surveillance in innumerable aspects of our daily lives, brought about by hostile acts deemed unimaginable only a few short years ago, the time is ripe for scientists in the diverse areas of sensing and security to join together in a concerted effort to combat the new brands of terrorism. The contents of this volume can be divided into three broadly defined but interrelated areas:The increasing need for fast and accurate sensing - what is the threat; The scientific underpinnings of the ongoing revolution in sensing; Specific sensing algorithms and techniques.A deep understanding of these three topics, and of their interdependency, is clearly crucial to meet the increasing sophistication of those who wish to do us harm. The contributors to this volume are many of the world's leading experts in the development of new methodologies to both comprehend and predict these threats and to effectively deal with them.The ASI brought together these world leaders from academia, Government and industry, with extensive multidisciplinary backgrounds evidenced by their research and participation in numerous workshops and conferences.

Terahertz for Military and Security Applications

As a result , a major limitation of THz time - domain spectroscopy ( THz - TDS ) for
real - world applications is water attenuation . The humidity in the atmosphere
affects THz waves ( T - ray ) for long distance measurement and tracing materials
 ...

Terahertz for Military and Security Applications


Future Security

The technology for MMW and THz security applications is expanding rapidly
internationally. Yet there is insufficient technology available to develop a system
capable of identifying concealed objects and threats. Effort is continued to be ...

Future Security


Terahertz for Military and Security Applications II

THz imaging has been demonstrated using both quasi-optical and synthetic
aperture approaches, results are presented including images of scatterers as
well as non-destructive evaluation of ceramics. Two potential sensing
applications of ...

Terahertz for Military and Security Applications II

Proceedings of SPIE present the original research papers presented at SPIE conferences and other high-quality conferences in the broad-ranging fields of optics and photonics. These books provide prompt access to the latest innovations in research and technology in their respective fields. Proceedings of SPIE are among the most cited references in patent literature.

Introduction to THz Wave Photonics

Springer (2007) ISBN-13: 978-1402065026 THz Science and Technology for
Military and Security Applications, by Dwight L. Woolard, James O. Jensen, R.
Jennifer Hwu, and Michael S. Shur (Editors). World Scientific (2007) ISBN-13: ...

Introduction to THz Wave Photonics

Terahertz (THz) radiation, which is electromagnetic radiation in a frequency int- val from 0.3 to 10 THz (1 mm–30 ?m wavelength), is the next frontier in science and technology. This band occupies a large portion of the electromagnetic sp- trum 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 c- munity for studying the background of cosmic far-infrared radiation, and by the laser-fusion community for the diagnostics of plasmas. Since the ?rst demonstration of THz wave time-domain spectroscopy in the late 1980s, there has been a series of signi?cant 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.

Terahertz Imaging for Biomedical Applications

THz. Pattern. Recognition. Experiments. The work described in this chapter
combines the different techniques discussed in previous ... of THz measurements
, highlighting their potential in biomedical, pharmaceutical, and security
applications.

Terahertz Imaging for Biomedical Applications

Terahertz biomedical imaging has become an area of interest due to its ability to simultaneously acquire both image and spectral information. Terahertz imaging systems are being commercialized, with increasing trials performed in a biomedical setting. As a result, advanced digital image processing algorithms are needed to assist screening, diagnosis, and treatment. "Pattern Recognition and Tomographic Reconstruction" presents these necessary algorithms, which will play a critical role in the accurate detection of abnormalities present in biomedical imaging. Terhazertz tomographic imaging and detection technology contributes to the ability to identify opaque objects with clear boundaries, and would be useful to both in vivo and ex vivo environments, making this book a must-read for anyone in the field of biomedical engineering and digital imaging.

Terahertz and Mid Infrared Radiation Detection of Explosives and CBRN Using Terahertz

Many substances exhibit rotational and vibrational transitions in the terahertz (
THz-0.3 THz up to 10 THz) and mid infrared ... and resolution in application fields
as industrial quality inspection control, customs inspection and security screening
.

Terahertz and Mid Infrared Radiation  Detection of Explosives and CBRN  Using Terahertz

The reader will find here a timely update on new THz sources and detection schemes as well as concrete applications to the detection of Explosives and CBRN. Included is a method to identify hidden RDX-based explosives (pure and plastic ones) in the frequency domain study by Fourier Transformation, which has been complemented by the demonstration of improvement of the quality of the images captured commercially available THz passive cameras. The presented examples show large potential for the detection of small hidden objects at long distances (6-10 m). Complementing the results in the short-wavelength range, laser spectroscopy with a mid-infrared, room temperature, continuous wave, DFB laser diode and high performance DFB QCL have been demonstrated to offer excellent enabling sensor technologies for environmental monitoring, medical diagnostics, industrial and security applications. From the new source point of view a number of systems have been presented - From superconductors to semiconductors, e.g. Detection of Terahertz Waves from Superconducting Bi2Sr2CaCu2O8+δ Intrinsic Josephson Junctions. The quest for a compact room temperature THz source and the recent advances in high power mid-IR QCLs lead to the development of a semiconductor THz source based on intracavity difference frequency generation. Furthermore, alternative electrically pumped THz sources based on the high emission efficiency predicted for polaritonic states in the ultra-strong coupling regime led to the demonstration of electroluminescent devices. Finally, antipolaritons in dispersive media were discussed and different aspects of the interaction of THz radiation with biomatter were presented.

Simulation of Semiconductor Processes and Devices 2007

Other areas of the use of THz radiation sources such as defence and security
applications, as well as sensor techniques are also envisaged. From the
viewpoint of practical applications, the most perspective devices are, probably,
solid-state ...

Simulation of Semiconductor Processes and Devices 2007

This volume contains the proceedings of the 12th International Conference on Simulation of Semiconductor Processes and Devices, SISPAD 2007, held September 2007 in Vienna, Austria. It provides a global forum for the presentation and discussion of recent advances and developments in the theoretical description, physical modeling and numerical simulation and analysis of semiconductor fabrication processes, device operation and system performance.

Microwave and Millimeter wave Remote Sensing for Security Applications

The applications of security sensing eXpand beyond counter—terrorism: border
security involves detecting illegal ... biological and chemical agent sensors,
infrared cameras, spectroscopic sensors, acoustic sensors, and THZ imagers. A
given ...

Microwave and Millimeter wave Remote Sensing for Security Applications

Microwave and millimeter-wave remote sensing techniques are fast becoming a necessity in many aspects of security as detection and classification of objects or intruders becomes more difficult. This groundbreaking resource offers you expert guidance in this burgeoning area. It provides you with a thorough treatment of the principles of microwave and millimeter-wave remote sensing for security applications, as well as practical coverage of the design of radiometer, radar, and imaging systems. You learn how to design active and passive sensors for intruder detection, concealed object detection, and human activity classification. This detailed book presents the fundamental concepts practitioners need to understand, including electromagnetic wave propagation in free space and in media, antenna theory, and the principles of receiver design. You find in-depth discussions on the interactions of electromagnetic waves with human tissues, the atmosphere and various building and clothing materials. This timely volume explores recently developed detection techniques, such as micro-Doppler radar signatures and correlation radiometry. The book is supported with over 200 illustrations and 1,135 equations.

Optical Security Systems

By reason of these requirements , there has been a significant interest in
employing terahertz ( THz ) technology for security applications . There are three
prime motivations for this interest : ( i ) THz radiation can detect concealed
weapons ...

Optical Security Systems

Proceedings of SPIE present the original research papers presented at SPIE conferences and other high-quality conferences in the broad-ranging fields of optics and photonics. These books provide prompt access to the latest innovations in research and technology in their respective fields. Proceedings of SPIE are among the most cited references in patent literature.

Terahertz Techniques

THz imaging experiments for other than astronomical applications have been
reported by D.H.Barker et al. as early as ... In the field of security, THz imaging is
promising because of the ability of THz radiation to penetrate many substances, ...

Terahertz Techniques

Research and development in the terahertz portion of the electromagnetic spectrum has expanded very rapidly during the past fifteen years due to major advances in sources, detectors and instrumentation. Many scientists and engineers are entering the field and this volume offers a comprehensive and integrated treatment of all aspects of terahertz technology. The three authors, who have been active researchers in this region over a number of years, have designed Terahertz Techniques to be both a general introduction to the subject and a definitive reference resource for all those involved in this exciting research area.

Infrared Technology and Applications XXXIV

A Novel Low Cost Alternative to THz for Security and Defence Applications a G.G.
Diamond ** , D.A. Hutchins , P. Pallava and R.J. Green “ Electrical and
Electronics Division , School of Engineering , University of Warwick , Gibbet Hill
Road ...

Infrared Technology and Applications XXXIV

Proceedings of SPIE present the original research papers presented at SPIE conferences and other high-quality conferences in the broad-ranging fields of optics and photonics. These books provide prompt access to the latest innovations in research and technology in their respective fields. Proceedings of SPIE are among the most cited references in patent literature.

Terahertz Frequency Detection and Identification of Materials and Objects

The development of pulsed photoconductive THz generation and detection has
already yielded a range of successful products, and further research into both
applications and complementary THz technologies promises much more. In
security ...

Terahertz Frequency Detection and Identification of Materials and Objects

Want an overview of where the technology of terahertz detection has been going? Here it is. The technology has largely been developed around expensive and bulky femtosecond laser systems but, as described in this book, advances in semiconductor superlattice technology are leading to compact "electronic" sources such as the quantum cascade laser, two-terminal "Gunn" type oscillators and even a THz frequency amplifier. These advances towards electronic (as opposed to optical) THz systems mean that the technology will become portable and much less costly.

Optics and Photonics in Global Homeland Security

NJIT 25m cleaned 40m cleaned Figure 4 : Theoretical calculation of a THz image
generated by an interferometric imaging array . ... CONCLUSION THz detection
and imaging has shown great promise for security applications since many non ...

Optics and Photonics in Global Homeland Security

Proceedings of SPIE present the original research papers presented at SPIE conferences and other high-quality conferences in the broad-ranging fields of optics and photonics. These books provide prompt access to the latest innovations in research and technology in their respective fields. Proceedings of SPIE are among the most cited references in patent literature.

Terahertz Physics Devices and Systems

3 THz are used to detect concealed objects : a metal object and an RDX sample .
The terahertz interferometric imaging method can be used in defense and
security applications to detect concealed weapons , explosives as well as
chemical ...

Terahertz Physics  Devices  and Systems

Proceedings of SPIE present the original research papers presented at SPIE conferences and other high-quality conferences in the broad-ranging fields of optics and photonics. These books provide prompt access to the latest innovations in research and technology in their respective fields. Proceedings of SPIE are among the most cited references in patent literature.

Principles of Terahertz Science and Technology

On the other hand, passive imaging systems such as the spaceborne THz sensor
arrays discussed in section 6.2.3 measure thermally generated ... It is desirable to
reduce the acquisition time to 1-10 seconds for practical security applications.

Principles of Terahertz Science and Technology

Principles of Terahertz Science and Technology aims to elucidate the fundamentals of THz technology and science for potential new users. It surveys major techniques of generating, detecting, and manipulating THz waves and also discusses a number of essential processes where THz waves interact with physical, chemical, and biological systems. This book serves as an introduction to THz technology for new researchers in various fields. Many different disciplines, such as ultrafast spectroscopy, semiconductor device fabrication, bio-medical imaging and more, involve the recent development of THz technology. It is necessary to lay down a strong, common foundation among researchers, so that communication can proceed smoothly. Previous THz research activities have concentrated on generation and detection, but the focus has now shifted to practical applications of this technology, such as high-speed optoelectronic signal processing and molecular spectroscopy. Drawing upon years of practical experience and using numerous examples and illustrative applications Yun-Shik Lee discusses: The major techniques of generating, detecting, and manipulating THz waves Essential processes where THz waves interact with physical, chemical, and biological systems Medical Applications of T-Ray Imaging including, optical properties of human tissue, cancer diagnostics, reflective imaging of skin burns and detection of dental caries Principles of Terahertz Science and Technology is an ideal book for applied physicists, microwave engineers, biomedical engineers, electrical engineers, and analytical chemists interested in the fundamentals and applications of THz engineering.

Terahertz and Gigahertz Electronics and Photonics

THz radiation is non - ionizing and able to penetrate through materials such as
plastics and many clothing fabrics safely rendering it suitable for many security
applications . As THz imaging becomes a mature technology it is becoming ...

Terahertz and Gigahertz Electronics and Photonics