Results 31 to 40 of about 452,793 (301)

Fast Terahertz Computed-Tomography Imaging With a Quantum-Cascade Laser and a Scanning Mirror [PDF]

, 2013
A terahertz transmission imaging system based on a quantum-cascade laser (QCL), a fast scanning mirror, and a sensitive Ge:Ga detector is demonstrated. In order to reduce artifacts, special care was taken on the optics and the conversion of the measured
H.-W. Hubers, H. Richter, Richter, Heiko, Schrottke, Lutz, Grahn, H. T., Hübers, Heinz-Wilhelm, Wienold, Martin, Rothbart, Nick, M. Wienold, L. Schrottke, H. T. Grahn, N. Rothbart   +11 more
core   +1 more source

A Hard Example Mining Approach for Concealed Multi-Object Detection of Active Terahertz Image

Applied Sciences, 2021
Concealed objects detection in terahertz imaging is an urgent need for public security and counter-terrorism. So far, there is no public terahertz imaging dataset for the evaluation of objects detection algorithms.
Ling Li, Fei Xue, Dong Liang, Xiaofei Chen   +3 more
doaj   +1 more source

Time-resolved electronic capture in germanium doped with hydrogen-like impurity centers [PDF]

, 2012
The capture of free holes and electrons in germanium (Ge) doped by gallium (Ga) or antimony (Sb) has been studied by a time-resolved pump-probe experiment with the free-electron laser FELBE at the Helmholtz-Zentrum Dresden-Rossendorf.
Pavlov, S.G., H.-W. Hubers, S. Winnerl, Shastin, V.N., M. Mittendorff, S. G. Pavlov, Deßmann, N., N. Dessmann, R. Kh. Zhukavin, Zhukavin, Roman, Mittendorff, M., Hübers, Heinz-Wilhelm, V. N. Shastin, Winnerl, S.   +13 more
core   +1 more source

Resonant Polysilicon Antenna for Terahertz Detection

IEEE Photonics Journal, 2019
Resonant antennas have garnered considerable interest in terahertz and visible regimes owing to its extraordinary localized field concentration capability.
Ze Shen, Xiaoli Ji, Yiming Liao, Ke Wang, Biaobing Jin, Feng Yan   +5 more
doaj   +1 more source

Stimulated terahertz emission due to electronic Raman scattering in silicon [PDF]

, 2009
Silicon-based semiconductors are intensively investigated over the past years as promising candidates for optoelectronic devices at terahertz (THz) frequencies [1]. Optically pumped intracenter silicon lasers, realized in the past decade in the THz range,
Pavlov, S.G., Hubers, H. W., Riemann, H., Hübers, H.-W., van der Meer, A.F.G., H. Riemann, R. Kh. Zhukavin, Redlich, B., Pavlov, S.G. (author), Böttger, U. (author), Abrosimov, N.V. (author), J. N. Hovenier, Abrosimov, N.V., Hübers, H.W. (author), Hübers, H.W., V. N. Shastin, Pavlov, S. G., Hovenier, J.N. (author), Böttger, U., Abrosimov, N. V., Shastin, V. N., Shastin, V.N., U. Böttger, N. V. Abrosimov, S. G. Pavlov, Zhukavin, R. K., Redlich, B. (author), Zhukavin, R.K., Hovenier, J. N., B. Redlich, Hovenier, J.N., Zhukavin, R.K. (author), A. F. G. van der Meer, Zhukavin, R.Kh., Van der Meer, A.F.G. (author), H.-W. Hübers, Shastin, V.N. (author), van der Meer, A. F. G., Riemann, H. (author)   +38 more
core   +2 more sources

Terahertz single pixel imaging based on a Nipkow disk [PDF]

, 2012
We describe a terahertz single pixel imaging system based on a Nipkow disk. Nipkow disks have been used for fast scanning imaging systems since the first experimental television was invented in 1926.
Saha, S., Cumming, D., Ma, Y., Grant, J.
core   +1 more source

Enhancement of terahertz response in a microstructure-integrated-type-II Dirac semimetal

AIP Advances, 2023
Terahertz detection technology has been confronted with formidable impediments, notably the paucity of sensitivity and operating temperature for photodetectors based on traditional bulk materials. In an attempt to surmount the difficulties, we propose an
Xuyang Lv, Kaixuan Zhang, Mengjie Jiang, Shi Zhang, Libo Zhang, Li Han, Huaizhong Xing, Dong Wang, Shiqi Lan, Lin Wang, Shijian Tian, Xiaoshuang Chen   +11 more
doaj   +1 more source

Design of Terahertz Detection Antenna With Fractal Butterfly Structure

IEEE Access, 2021
Terahertz (THz) technology can be widely used in radar, remote sensing, homeland security and counter-terrorism, high-secret data communication and transmission, atmospheric and environmental monitoring, real-time biological information extraction, and ...
Yi Shi, Xiaodong Zhang, Qinxi Qiu, Yinrui Gao, Zhiming Huang   +4 more
doaj   +1 more source

Terahertz Detectors based on graphene

Journal of Physics: Conference Series, 2013
In this study we present magnetotransport an magnetooptical data obtained in the magnetic field range 0T < B < 7T at detectors patterned in Corbino geometry on epitaxial graphene wafer using a Ge detector. We observed the cyclotron resonance of charge carriers in these wafers by measurement of the transmission of THz wafes through the unpatterned
Gouider, Fathi, Salman, Majdi, Göthlich, Markus, Schmidt, Hennrik, Ahlers, Franz-J., Haug, Rolf J., Nachtwei, Georg   +6 more
openaire   +1 more source

Terahertz pump-probe experiment at the synchrotron light source MLS [PDF]

, 2013
We have developed a pump-probe experiment utilizing broad-band coherent terahertz synchrotron radiation provided by the Metrology Light Source (MLS).
H.-W. Hubers, Hoehl, Arne, Pohl, Andreas, Ulm, Gerhard, Müller, Ralph, R. Muller, Pavlov, Sergey, A. Pohl, S. G. Pavlov, M. Ries, G. Wustefeld, Wüstefeld, Godehard, Hübers, Heinz-Wilhelm, Ries, Markus, G. Ulm, A. Hoehl   +15 more
core   +1 more source