Results 281 to 290 of about 40,370 (319)

Sources of Coherent Terahertz Radiation

AIP Conference Proceedings, 2006
New results in the field of high‐frequency gyrotrons, gyro‐multipliers and orotrons allow one to consider these electron devices as promising candidates for the realization of powerful and available sources in Terahertz range. Electron beams with a very high compression of up to a factor of 4,400 have been obtained and selective generation at the 1st ...
B.S. Dumesh, F.S. Rusin, Sergey V. Samsonov, Andrey V. Savilov, A. E. Fedotov, Vladimir N. Manuilov, Ilya V. Bandurkin, Nikolay G. Kolganov, V. L. Bratman, Y. K. Kalynov   +9 more
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A terahertz radiation spectrum analyzer

Instruments and Experimental Techniques, 2012
A spectrum analyzer of terahertz radiation pulses has been designed for spectroscopic studies of condensed media, gases, and plasmas. The operating frequency range is 0.05–6.00 THz, the frequency resolution is 0.5 cm−1, and the aperture is 40 mm.
Igor E. Spektor, V. B. Anzin, Gennady A. Komandin, Sergey P. Lebedev, O. E. Porodinkov   +4 more
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Damage thresholds for terahertz radiation

SPIE Proceedings, 2010
Several international organizations establish minimum safety standards to ensure that workers and the general population are protected against adverse health effects associated with electromagnetic radiation. Suitable standards are typically defined using published experimental data. To date, few experimental studies have been conducted at Terahertz
Danielle R. Dalzell, Rebecca L. Vincelette, William P. Roach, Robert J. Thomas, Caleb L. Roth, Jill McQuade, Jason A. Payne, Gerald J. Wilmink, Bennet L. Ibey   +8 more
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Emission of Terahertz Radiation

2003
As described by the theory set out in Chap. 1 and proven by the experiments discussed in Chap. 4, Bloch oscillations are associated with a harmonic spatial motion of carriers. It is obvious that these carriers should thus generate radiation owing to their continuous acceleration.
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Waveguides for Pulsed Terahertz Radiation [PDF]

Conference on Lasers and Electro-Optics 2012, 2012
In this tutorial, we review basic ideas of waveguide physics, and discuss the state of the art in strategies for guiding broadband terahertz pulses. These include metallic, dielectric, and plasmonic waveguides.
openaire   +1 more source

Sensing with Terahertz Radiation

2003
Spectroscopy in the Terahertz Spectral Region.- Terahertz Imaging.- Free-Space Electro-Optic Techniques.- Photomixers for Continuous-Wave Terahertz Radiation.- Applications of Optically Generated Terahertz Pulses to Time Domain Ranging and Scattering.- Bio-medical Applications of THz Imaging.- Electronic Sources and Detectors for Wideband Sensing in ...
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Imaging and Sensing with Terahertz Radiation

AIP Conference Proceedings, 2005
Recent advances have revolutionized the field of terahertz imaging, and revitalized interest in the applications of this technique for imaging and non‐destructive evaluation. Here we describe the technique of terahertz time‐domain spectroscopy, and highlight some of the promising new imaging capabilities that have been demonstrated recently.
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Generation and Detection of Terahertz Radiation

2012
Methods for generating and detecting terahertz (THz) radiation are reviewed with emphasis on the physical mechanisms involved as well as the typical characteristics of the generated radiation. We first discuss methods for generating and detecting broadband pulses of THz radiation, which are based on optical femtosecond laser systems. The second section
Joshua R. Freeman, David A. Ritchie, H. E. Beere   +2 more
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Spectroscopy by pulsed terahertz radiation

Measurement Science and Technology, 2002
Spectroscopies using terahertz (THz) radiation excited by ultrashort laser pulses have been rapidly developing recently. In this paper, the principles of various types of THz time domain spectroscopies (THz TDSs), i.e. transmission-, reflection-and ellipsometry-type THz TDSs, and their applications to the characterization of semiconductors are ...
Masanori Hangyo, Shigeki Nashima, Takeshi Nagashima   +2 more
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Introduction and Motivation to Terahertz Radiation

2012
Terahertz pattern recognition is a signal processing procedure for extracting information from THz spectroscopic data. This is an area of study that is intimately tied to the measurement of terahertz data sets.
Derek Abbott, Xiaoxia Yin, Brian W.-H. Ng   +2 more
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