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Terahertz Laser
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Terahertz Techniques (Hardcover) $240.85 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. |
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Terahertz Optoelectronics by Sakai, Kiyomi [Paperback] $481.47 This book presents recent and important developments in the field of terahertz radiation, with a particular focus on pulsed terahertz radiation. Situated in the gap between electronics and optics, the terahertz frequency range of the electromagnetic spectrum has long been neglected by scientists and engineers due to a lack of efficient and affordable terahertz sources and detectors. The advent of femtosecond lasers in the 1980s and photoconductive switches in 1984 have made the terahertz gap accessible, while at the same time advances in electronics and optics have made it narrower. Research activities in terahertz frequencies have intensified dramatically since that time, funding has increased by a factor of 100 in the last decade. The reviews by leading experts are of interest to researchers and engineers as well as advanced students. Author: Sakai, Kiyomi Series Title: Topics in Applied Physics Series Number: 97 Binding Type: Paperback Number of Pages: 412 Publication Date: 2010/11/19 Language: English Dimensions: 9.21 x 6.14 x 0.83 inches |
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Terahertz Spectroscopy of Proteins $199.15 In this work, global hydration dynamics of solute molecules in water has been studied extensively by terahertz (THz) absorption spectroscopy. Hydration studies have been carried out in dynamical chemical equilibrium as well as in realtime while biochemical reactions proceeded. To characterize the role of water dynamics in a chemical reaction, a kinetic terahertz absorption (KITA) spectrometer has been developed, set up, and applied. In chemical equilibrium, model peptides based on the amino acids glycine, leucine, and tryptophan have been studied as well as native and denatured protein variants (ubiquitin) and functional enzymes (MT1MMP). Furthermore, nonequilibrium dynamical properties of water network rearrangements has been observed by KITA spectroscopy in realtime for ubiquitin folding and for MT1MMPdriven hydrolysis of peptide substrates. Comprehensive interpretation of the timeresolved KITA measurements has been achieved by merging KITA with state of the art realtime biophysical methods and simulations. Author: Born, Benjamin Binding Type: Paperback Number of Pages: 168 Publication Date: 2010/11/03 Language: English Dimensions: 6.00 x 9.02 x 0.39 inches |
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Free Electron Laser $114.71 A freeelectron laser, or FEL, is a laser that shares the same optical properties as conventional lasers such as emitting a beam consisting of coherent electromagnetic radiation which can reach high power, but which uses some very different operating principles to form the beam. Unlike gas, liquid, or solidstate lasers such as diode lasers, in which electrons are excited in bound atomic or molecular states, FELs use a relativistic electron beam as the lasing medium which moves freely through a magnetic structure, hence the term free electron. The freeelectron laser has the widest frequency range of any laser type, and can be widely tunable, currently ranging in wavelength from microwaves, through terahertz radiation and infrared, to the visible spectrum, to ultraviolet, to Xrays. Free Electron Lasers were invented by John Madey in 1976 at Stanford University. The work emanates from research done by Hans Motz who proposed the wiggler magnetic configuration which is at the heart of a free electron laser. Madey used a 24 MeV electron beam and 5 m long wiggler to amplify a signal. Soon afterward, other laboratories with accelerators started developing such lasers. Author: Miller, Frederic P./ Vandome, Agnes F./ McBrewster, John Binding Type: Paperback Number of Pages: 176 Publication Date: 2010/04/24 Language: English Dimensions: 5.98 x 9.01 x 0.40 inches |
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Efficient Terahertz Photoconductive Source. $115.71 The photoconductive method is one of the oldest methods for the generation of THz room temperature operated THz electromagnetic waves. The THz photoconductive source has operated at a lower power level in the order of hundreds of nW. In addition, the energy conversion of optical to THz efficiency has remained extremely low. One of the most efficient THz photoconductive sources is a trapenhanced field (TEF) effect source. The field is measured to contain more than 90 of the total DC bias within the first 5 mum of an 80 mum gap between the electrodes reaching kV/cm with only a modest bias. The overall THz power, however, has remained low, due to its rapid saturation. To date, there has been a limited understanding of the TEF effect. In this thesis, a more detailed experimental investigation of TEF effect current transport and field distribution based on annealing is presented to explain some of the underlining physics of TEF effect. A spatially extended line excitation is introduced to effectively reduce the screening effect while still exploiting the TEF region to maintain high efficiency and reach the muW regime. The record efficiency reached by this method is demonstrated. An experimental demonstration with a numerical analysis of the line excitation is presented. The spectral analysis of both a point and a line excitation demonstrate that the line excitation spectrum is not only comparable to that of the point excitation, but also extends the range of useful lower frequency content. To further improve the THz efficiency, the line excitation THz array is investigated. Author: Kim, Joong Hyun Binding Type: Paperback Number of Pages: 164 Publication Date: 2011/09/03 Language: English Dimensions: 9.69 x 7.44 x 0.35 inches |
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Sensing with Terahertz Radiation $428.56 The purpose of this book is twofold. 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 realworld 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. Author: Mittleman, Daniel/ Mittleman, Daniel Series Title: Springer Series in Optical Sciences, Series Number: 85 Binding Type: Hardcover Number of Pages: 353 Publication Date: 2002/12/16 Language: English Dimensions: 9.68 x 6.36 x 0.73 inches |
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Terahertz Sources and Systems $194.03 No Synopsis Available |
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Terahertz Spectroscopy : Principles and Applications $185.2 No Synopsis Available |
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Terahertz Technology : Fundamentals and Applications $174.53 No Synopsis Available |
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Intense Terahertz Excitation of Semiconductors $165.75 No Synopsis Available |
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New Directions in Terahertz Technology $329.55 No Synopsis Available |
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A Terahertz TwoWire Waveguide with Low Bending Loss. $115.71 We present experimental and theoretical evidence for low loss terahertz propagation along a twowire waveguide. We find that the mode pattern at the end of the waveguide resembles that of a dipole consistent, with the expected fundamental mode of the structure. We experimentally observe that the twowire configuration can be used to efficiently excite the radial mode (Somerfield wave) of a single wire, by adiabatically separating the two wires into two single wires. We observe for the first time that a commercial 300O TV twinlead antenna cable can be used to propagate low loss THz radiation, guiding frequency components up to 0.2 THz even though they are designed only to operate to about 800 MHz. We find this to be the case even at considerable wirebend angles. Author: Mbonye, Marx Binding Type: Paperback Number of Pages: 28 Publication Date: 2011/09/02 Language: English Dimensions: 9.69 x 7.44 x 0.06 inches |
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Convergence of Terahertz Sciences in Biomedical Systems (Hardcover) $311.3 PAVI09 Proceedings of the 4th International Workshop "From Parity Violation to Hadronic Structure and more..." held in Bar Harbor, Maine, USA, 22-26 June 2009 Main topic: Parity Violation in the Electro-Weak Interactions and Other Low-Energy Tests of the Standard Model, including: Overview of the experimental program, Strangeness in the nucleon: experiment and theory, Standard Model tests, Hadronic Parity Violation, Probing two-photon exchange effects, Electro-weak radiative corrections involving hadronic structure, Technical developments, Neutrinos, beta decay and electric dipole moments. Reprinted from Hyperfine Interactions Volume XXX . |
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Optical Millimeter-wave and Terahertz Generation (Hardcover) $223.09 Description not available. |
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Optical Millimeter-Wave and Terahertz Generation : Technologies and Applications $125.78 No Synopsis Available |
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Passive Terahertz Devices Based on Optically Excited Silicon $62.4 No Synopsis Available |
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Boosting Terahertz Radiation in THz-TDS
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