Results 231 to 240 of about 2,058,874 (276)
Some of the next articles are maybe not open access.
Generalized treatment of skew-cosh-Gaussian lasers for bifocal terahertz radiation
, 2020A generalized treatment of skew-cosh-Gaussian lasers with skewness parameters n and s is provided for obtaining bifocal terahertz radiation in a realistic plasma having electron-neutral collisions.
H. Malik
semanticscholar +1 more source
Imaging with terahertz radiation
Reports on Progress in Physics, 2007Within the last several years, the field of terahertz science and technology has changed dramatically. Many new advances in the technology for generation, manipulation, and detection of terahertz radiation have revolutionized the field. Much of this interest has been inspired by the promise of valuable new applications for terahertz imaging and sensing.
Chan, Wai Lam +2 more
openaire +2 more sources
Review of Intense Terahertz Radiation from Relativistic Laser-Produced Plasmas
IEEE Transactions on Plasma Science, 2019Recent years have witnessed a rapid development of sources for intense terahertz (THz) pulses and an increasing number of their applications. The advent of laser pulses with intensities in excess of $10^{18}$ W/cm2 offers an immense opportunity for ...
G. Liao, Yu-Tong Li
semanticscholar +1 more source
Terahertz radiation detectors: the state-of-the-art
Semiconductor Science and Technology, 2018The phenomena and recent progress in the evolution of the basic classes of the THz detectors that exist today are considered. Issues associated with the development and exploitation of THz radiation detectors in human activity applications are briefly ...
F. Sizov
semanticscholar +1 more source
Quadrupole radiation from terahertz dipole antennas
Optics Letters, 2000We report what is to our knowledge the first detailed investigation of the polarization state of radiation from lens-coupled terahertz dipole antennas. The radiation exhibits a weak but measurable component that is polarized orthogonally to the orientation of the emitter dipole.
J V, Rudd, J L, Johnson, D M, Mittleman
openaire +2 more sources
Langmuir wave undulator for terahertz radiation
Optics Letters, 2012A source of terhertz (THz) radiation based on the free-electron laser, where a plasma wave plays the role of undulator, is theoretically studied. This scheme can generate coherent photons in the range of 0.1-10 THz. The feasible physical parameters in laboratories are estimated.
Seunghyeon, Son +2 more
openaire +2 more sources
Imprinted diffractive optics for terahertz radiation
Optics Letters, 2007Terahertz diffractive optic elements have been fabricated in polypropylene by imprinting with a silicon master. A silicon master is created with eight phase levels for high diffraction efficiency and etched using inductively coupled plasma reactive ion etching.
E D, Walsby +5 more
openaire +2 more sources
Terahertz radiation and spectroscopy
OSA Annual Meeting, 1993Various mechanisms for generating short pulses of terahertz radiation by excitation with ultrafast laser pulses are described, together with optoelectronic and bolometric means of terahertz detection.
openaire +1 more source
Terahertz radiation probes polymers
C&EN Global Enterprise, 2016For a long time, the club of scientists working with terahertz radiation was fairly exclusive. Its “members” included instrumentation aficionados who made customized equipment for probing molecules in the terahertz range (1 THz = 1012 Hz), also known as the far-infrared range. These scientists used light in this portion of the electromagnetic spectrum,
openaire +1 more source
Noninvasive Mail Inspection System with Terahertz Radiation
Applied Spectroscopy, 2009Using the high penetrability of the terahertz waves and the characteristic absorption spectra in this frequency range, we have built a noninvasive mail inspection system targeting drugs and explosives. The system is composed of two stages; in the first stage, the scattering of a continuous terahertz wave is used for selecting mail that contains ...
Hiromichi, Hoshina +4 more
openaire +2 more sources