Download or read book Characterization and Design of Optical Systems and Components in the Terahertz Range written by Philipp Fürholz and published by . This book was released on 2009 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design and Development of Optical Dispersion Characterization Systems written by Iraj Sadegh Amiri and published by Springer. This book was released on 2019-02-04 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book demonstrates the implementation of an automated measuring system for very efficient measurement of chromatic dispersion, which uses a modulation phase shift method over long haul of optical single mode fiber. The authors show how a new scheme for measuring chromatic dispersion is adopted in conjunction with a tunable laser (TLS), providing the optical power at required wavelength and digital oscilloscope (DOSC) for measuring the phase difference between microwave signals from transmitter and microwave signals at the receiver. This is a novel approach for real-time chromatic dispersion in optical systems such as optical fibers. The setup used is very simple, accurate and cost effective, compared to other methods such as direct measurement, differential mode delay, polarization mode dispersion measurement and phase delay method.
Download or read book Design and Characterization of Terahertz Imaging Systems written by Suddhasatwa Ghosh and published by . This book was released on 2005 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design Setup and Characterization of an Electronic Terahertz Measurement System Featuring Sensor Fusion written by Henrik May and published by . This book was released on 2018-05-15 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diploma Thesis from the year 2017 in the subject Physics - Optics, grade: 1.1, University of Applied Sciences Kaiserslautern (Fraunhofer Institute for Industrial Mathematics ITWM), language: English, abstract: This diploma thesis approaches the topic of data fusion from the hardware as well as the algorithmic perspective. In order to acquire data suitable for the merging process, two measurement systems are introduced featuring the opportunity to synchronously image a target with two measurement heads. Both systems allow non-destructive contact-free terahertz materials inspection with the means of the FMCW measurement principle. One scanning unit, the FusionHead, makes use of the radiation's polarization to allow collinear inspection on a target volume element with both measurement heads. This makes the data inherently suitable for the data fusion process. The second acquisition system covered in this work is the Compact system, enabling the user to image a whole component in raster scan movements obtaining a complete 3D image. Besides featuring two measurement heads, the Compact system is equipped with a control software, which synchronizes the data acquisition, raster movements, data analysis and the correct image visualization. The two measurement heads utilized in both systems feature adjacent frequency ranges, which are determined in the course of this thesis, and lead to different resolutions and penetration depths into the target. In order to make use of both their benefits and further increase the imaging resolution, the two heads' data is fused. A set of requirements, necessary for the fusion process, is defined and the data is processed to fulfill them. Furthermore, a set of gap filling algorithms is developed and implemented, which allow to fill the gap between the measurement heads' frequency ranges. The possible algorithms are tested with respect to imaging resolution and noise. The best performing procedures are put to further testing of thickness meas
Download or read book Characterization of Terahertz Emission from High Resistivity Fe doped Bulk Ga0 69In0 31As Based Photoconducting Antennas written by Suranjana Sengupta and published by Springer Science & Business Media. This book was released on 2011-06-07 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Terahertz science and technology is attracting great interest due to its application in a wide array of fields made possible by the development of new and improved terahertz radiation sources and detectors. This book focuses on the development and characterization of one such source - namely the semi-large aperture photoconducting (PC) antenna fabricated on Fe-doped bulk Ga0.69In0.31As substrate. The high ultrafast carrier mobility, high resistivity, and subpicosecond carrier lifetime along with low bandgap make Ga0.69In0.31As an excellent candidate for PC antenna based THz emitter that can be photoexcited by compact Yb-based multiwatt laser systems for high power THz emission. The research is aimed at evaluating the impact of physical properties of a semi-large aperture Ga0.69In0.31As PC antenna upon its THz generation efficiency, and is motivated by the ultimate goal of developing a high-power terahertz radiation source for time-domain terahertz spectroscopy and imaging systems.
Download or read book Quasioptical Systems Components for Terahertz Astronomy written by Dathon R. Golish and published by . This book was released on 2008 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past two decades, submillimeter and terahertz astronomy has grown rapidly and become an important new window for studying the universe. This growth has been enabled by the confluence of several technologies which make the design and fabrication of high frequency single and multi-pixel heterodyne receivers possible. This dissertation reviews the development of a new generation of terahertz instrumentation at the University of Arizona, with specific emphasis on their optical components and systems. These instruments include several receivers for the Antarctic Submillimeter Telescope and Remote Observatory (formerly installed at the South Pole), including a dual-frequency 492/810 GHz receiver called Wanda, a 4-pixel 810 GHz heterodyne array called PoleSTAR, and a 1.5 THz receiver called TREND. It also covers receivers for the Heinrich Hertz Submillimeter Telescope on Mt. Graham in southern Arizona. These receivers include a 7-pixel 345 GHz heterodyne array called DesertSTAR, a 64-pixel polarimeter/bolometer system called Hertz, and a 64-pixel 345 GHz heterodyne array called SuperCam. After reviewing these instruments, concepts for the next generation of arrays and terahertz telescopes designed for the high Atacama desert, Antarctica, high altitude balloon missions, and orbiting observatories will be presented. This dissertation will also cover other contributions made to terahertz astronomy, including the creation of a Gaussian beam propagation program to help design terahertz optical systems and an integrated optics design for a waveguide interferometer to be used as an alternative to traditional bulk optics systems.
Download or read book Field Guide to Terahertz Sources Detectors and Optics written by Créidhe M. M. O'Sullivan and published by SPIE-International Society for Optical Engineering. This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary objective of this Field Guide to Terahertz Sources, Detectors, and Optics is to provide the reader with a concise description of the quasi-optical techniques used to design THz systems, as well as the basic principles of operation of the most common THz components in use today.
Download or read book Tunable Liquid Micro optical Systems Based on Electrowetting written by Florian Krogmann and published by . This book was released on 2008 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optical System Design Analysis and Production for Advanced Technology Systems written by and published by . This book was released on 1986 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fabrication of a Terahertz Imaging System written by and published by . This book was released on 2005 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: During this project, the work on the development of a Terahertz imaging system was performed in the labs of both Prof. Kolodzey and Prof. Goossen. The terahertz and optical components for generating, detecting and manipulating the terahertz beams were designed, developed, and purchased. To evaluate suitable materials for lenses and components, spectra were measured by the technique of Fourier transform infrared spectrometry, using a Thermo-Nicolet 780 system. This FTIR system operates over a frequency range from 0.6 THz to 300 THz (20 to 10,000 cm-1). Spectral transmission measurements for lens materials such as ZnSe, and for architectural materials such as dry-wall (Sheet Rock) were obtained. The development and characterization of a prototype imaging system using a CO2 gas laser source at 28.3 THz (10.6 m wavelength), and a pyroelectric multipixel video camera with a broad spectral response in the THz region was demonstrated. An optical system to expand and collimate the beam using ZnSe lenses was designed and assembled on an optical bench. All of these components were operated at room temperature. This optical delivery system enabled the measurements of the transmission and reflection of objects placed in the terahertz beam path. The arrangement of this terahertz imaging systems was modular in the sense that alternative sources and detectors can be substituted for comparisons of performance, and for operation in difference spectral regimes. Penetration, or see-through, images of a series of objects and materials, including circuit boards, carbon nanotubes, printing ink, DNA, clothing textiles, and animal bone were made and analyzed. We found that the lower terahertz frequencies (0.6 to 3 THz) offer a greater degree of penetration through architectural and textile materials; whereas the upper terahertz frequencies (2 to 10 THz) offer spectral selectivity by having specific spectral lines.
Download or read book Handbook of Terahertz Technology for Imaging Sensing and Communications written by D Saeedkia and published by Elsevier. This book was released on 2013-01-16 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt: The recent development of easy-to-use sources and detectors of terahertz radiation has enabled growth in applications of terahertz (Thz) imaging and sensing. This vastly adaptable technology offers great potential across a wide range of areas, and the Handbook of terahertz technology for imaging, sensing and communications explores the fundamental principles, important developments and key applications emerging in this exciting field. Part one provides an authoritative introduction to the fundamentals of terahertz technology for imaging, sensing and communications. The generation, detection and emission of waves are discussed alongside fundamental aspects of surface plasmon polaritons, terahertz near-field imaging and sensing, room temperature terahertz detectors and terahertz wireless communications. Part two goes on to discuss recent progress and such novel techniques in terahertz technology as terahertz bio-sensing, array imagers, and resonant field enhancement of terahertz waves. Fiber-coupled time-domain spectroscopy systems (THz-TDS), terahertz photomixer systems, terahertz nanotechnology, frequency metrology and semiconductor material development for terahertz applications are all reviewed. Finally, applications of terahertz technology are explored in part three, including applications in tomographic imaging and material spectroscopy, art conservation, and the aerospace, wood products, semiconductor and pharmaceutical industries. With its distinguished editor and international team of expert contributors, the Handbook of terahertz technology for imaging, sensing and communications is an authoritative guide to the field for laser engineers, manufacturers of sensing devices and imaging equipment, security companies, the military, professionals working in process monitoring, and academics interested in this field. Examines techniques for the generation and detection of terahertz waves Discusses material development for terahertz applications Explores applications in tomographic imaging, art conservation and the pharmaceutical and aerospace industries
Download or read book THz optics and metamaterials written by Shuvan Prashant Turaga and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microwaves Millimeter Wave and Terahertz Liquid Crystals written by Anyong Qing and published by Springer Nature. This book was released on with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Terahertz Wireless Communication Components and System Technologies written by Mohammed El Ghzaoui and published by Springer Nature. This book was released on 2022-04-03 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents scientific and technological innovations and advancements already developed or under development in academia, industry, and research communities. It includes fundamental ideas and advancement in terahertz technology covering high intensity terahertz wave generation, THz detection, different modes of THz wave generation, THz modulation system, and terahertz propagation channel modeling. It highlights methodologies for the design of terahertz components and system technologies including emerging applications. The chapter contents are based on theoretical, methodological, well-established, and validated empirical work dealing with different topics in the terahertz domain. The book covers a very broad audience ranging from basic sciences to experts and learners in engineering and technology. It would be a good reference for advanced ideas and concepts in THz technology which will best suit microwave, biomedical, and electrical and communication engineers working towards next-generation technology.
Download or read book Sensing with Terahertz Radiation written by Daniel Mittleman and published by Springer. This book was released on 2013-02-26 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this book is two-fold. First, the various different methods of accessing the THz range are discussed, with a view to convince the reader that there have been qualitative and significant improvements over older, more conventional techniques. The text makes it clear that these improvements enable practical "real-world" applications of THz technology, in a manner which would not have been possible before. Second, the demonstrations and feasibility tests described serve as compelling evidence of the utility of such devices. Due to the unique characteristics of THz radiation and its interaction with materials, these devices have substantial advantages over other competing technologies in a number of different areas.
Download or read book Handbook of Optical Fibers written by Gang-Ding Peng and published by Springer. This book was released on 2019-08-28 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research- and application-oriented book covers main topical areas of optical fibers. The selection of the chapters is weighted on technological and application-specific topics, very much a reflection of where research is heading to and what researchers are looking for. Chapters are arranged in a user-friendly format essentially self-contained and with extensive cross-references. They are organized in the following sections: - Optical Fiber Communication | Editors: Ming-Jun Li and Chao Lu - Solitons and Nonlinear Waves in Optical Fibers | Editor: Boris A. Malomed - Optical Fiber Fabrication | Editor: Hairul Azhar Bin Abdul Rashid - Active Optical Fibers | Editor: Kyunghwan Oh - Special Optical Fibers | Editors: Perry Shum and Zhilin Xu - Optical Fiber Measurement | Editor: Jianzhong Zhang - Optical Fiber Devices | Editors: John Canning and Tuan Guo - Optical Fiber Device Measurement | Editor: Yanhua Luo - Distributed Optical Fiber Sensing | Editor: Yosuke Mizuno - Optical Fiber Sensors for Industrial Applications | Editor: Tong Sun OBE - Polymer Optical Fiber Sensing | Editor: Ginu Rajan - Photonic Crystal Fiber Sensing | Editor: D. N. Wang - Optical Fiber Microfluidic Sensors | Editor: Yuan Gong
Download or read book MEMS and Nanotechnology Volume 5 written by Gordon Shaw III and published by Springer Science & Business Media. This book was released on 2013-09-17 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: MEMS and Nanotechnology, Volume 5: Proceedings of the 2013 Annual Conference on Experimental and Applied Mechanics, the fifth volume of eight from the Conference, brings together contributions to this important area of research and engineering. The collection presents early findings and case studies on a wide range of areas, including: Microelectronics Packaging Single Atom/Molecule Mechanical Testing MEMS Devices & Fabrication In-Situ Mechanical Testing Nanoindentation Experimental Analysis of Low-Dimensional Materials for Nanotechnology
