Zobrazeno 1 - 10
of 59
pro vyhledávání: '"Torsten Löffler"'
Autor:
Peter Haring Bolívar, Torsten Löffler, Fabian Friederich, B. Baccouche, Wolfgang Sauer-Greff, Ralph Urbansky, Christian Weisenstein, Andreas Keil, Joachim Jonuscheit, Matthias Kahl, Shiva Mohammadzadeh, Patrick Agostini
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 23:1-11
Many established terahertz imaging modalities are on one side restricted by the tradeoff between resolution and field of view such as in the case of focal plane arrays and on the other side suffer from a limited depth of field such as in the case of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8a1766ea365617c750b3d2f26ac8059e
https://doi.org/10.1109/jstqe.2017.2673552
https://doi.org/10.1109/jstqe.2017.2673552
Autor:
Andreas Kolb, Thomas Klinkert, Peter Haring Bolívar, Torsten Löffler, Andreas Keil, Martin Pätzold, Matthias Kahl
Publikováno v:
IEEE Transactions on Terahertz Science and Technology. 3:625-634
We present a simulation and data-processing framework that incorporates full 3-D configuration, simulation, and reconstruction functionalities for hybrid synthetic aperture THz systems, which combine mechanically scanned real imaging projection (1-D)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::60866b0763f0e851c014bd9a4b427f2b
https://doi.org/10.1109/tthz.2013.2274698
https://doi.org/10.1109/tthz.2013.2274698
Autor:
T. Jensen, Peter Uhd Jepsen, Viktor Krozer, Torsten Löffler, Jonas Christian Due Buron, Vitaliy Zhurbenko, Finn Eichhorn, R K Olsson, Anders Kusk, Jørgen Dall
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 58:2027-2039
This paper presents the research and development of two terahertz imaging systems based on photonic and electronic principles, respectively. As part of this study, a survey of ongoing research in the field of terahertz imaging is provided focusing on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::645142f59ac8076504c7ef1bd9b208e2
https://doi.org/10.1109/tmtt.2010.2050246
https://doi.org/10.1109/tmtt.2010.2050246
Autor:
Torsten Löffler, Holger Quast
Publikováno v:
tm - Technisches Messen. 77:349-352
Zusammenfassung Terahertz- und Millimeterwellen sind gesundheitlich unbedenkliche elektro-magnetische Wellen im Bereich von 100–10.000 Gigahertz. Bei diesen Frequenzen sind die meisten nicht-leitfähigen Materialien transparent, sodass eine kontakt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::323d68ecb940d47af499e4d06ac89079
https://doi.org/10.1524/teme.2010.0025
https://doi.org/10.1524/teme.2010.0025
Publikováno v:
tm - Technisches Messen. 75:45-50
Die Verwendung der THz-Strahlung bietet diverse Anwendungsmöglichkeiten für die Messtechnik, wie z.B. die hochgenaue berührungslose Bestimmung der Oberflächentopographie technischer Materialien. Interferometrische Methoden im Visuellen und nahen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0c68faf02576428480758e4e3580d836
https://doi.org/10.1524/teme.2008.0847
https://doi.org/10.1524/teme.2008.0847
Publikováno v:
Proceedings of the IEEE. 95:1576-1582
We give an overview over several all-optoelectronic measurement systems which we have developed for transmittive and reflective imaging in the terahertz (THz) frequency range. The systems employ either pulsed or continuous-wave THz radiation. In both
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3025c8c7dd48387dbf3eff5b0c6b2f2
https://doi.org/10.1109/jproc.2007.898901
https://doi.org/10.1109/jproc.2007.898901
Autor:
Tobias Hahn, Mark D. Thomson, Noboru Hasegawa, Markus Kreß, Torsten Löffler, Hartmut G. Roskos
Publikováno v:
Semiconductor Science and Technology. 20:S134-S141
We give an overview of opto-electronic terahertz systems based on femtosecond amplifier lasers, and present a comparison of the relative performance and design issues of the various suitable downconversion photomixers employed for the generation of i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce6a48152abef94c4f0b6fcb8c50d98a
https://doi.org/10.1088/0268-1242/20/7/003
https://doi.org/10.1088/0268-1242/20/7/003
Autor:
Holger Quast, Stephanie Czasch, Mark D. Thomson, T. Bauer, Karsten Siebert, Hartmut G. Roskos, Torsten Löffler, Rainer Leonhardt
Publikováno v:
Physics in Medicine and Biology. 47:3743-3748
We present an all-optoelectronic THz imaging system for ex vivo biomedical applications based on photomixing of two continuous-wave laser beams using photoconductive antennas. The application of hyperboloidal lenses is discussed. They allow for f-num
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::daae3b88e45146a7277d0fb9782ac19d
https://doi.org/10.1088/0031-9155/47/21/310
https://doi.org/10.1088/0031-9155/47/21/310
Autor:
Mark D. Thomson, Bernd Hils, Wolff von Spiegel, Viktor Krozer, Fabian Friederich, Fanzhen Meng, Alvydas Lisauskas, Peter Haring Bolívar, Torsten Löffler, Andreas Keil, Hartmut G. Roskos, Gunnar Spickermann, Sebastian Boppel, Anna K. Huhn, Maris Bauer, Ralf Henneberger
Publikováno v:
NATO Science for Peace and Security Series B: Physics and Biophysics ISBN: 9789401788274
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a672ec0ca310c0bace8c03f65156f4c4
https://doi.org/10.1007/978-94-017-8828-1_9
https://doi.org/10.1007/978-94-017-8828-1_9
Publikováno v:
Applied Physics Letters. 83:3996-3998
We propose two terahertz reflectometry modalities that are optimized to be sensitive to the curvature of surface features. The first is a dark-field technique that allows the detection of protrusions and dents on surfaces with high sensitivity. It ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6564dede3f72a9fd6141f835c28dd18b
https://doi.org/10.1063/1.1623949
https://doi.org/10.1063/1.1623949