Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Wolff von Spiegel"'
Publikováno v:
SID Symposium Digest of Technical Papers. 49:725-728
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fed824072051b4c5b723f1c35ddf4f99
https://doi.org/10.1002/sdtp.12382
https://doi.org/10.1002/sdtp.12382
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 58:2008-2013
Our paper focuses on illumination aspects in active terahertz imaging. First, we introduce our fast 620-GHz camera and discuss imaging with focused illumination. After that, we switch to global illumination and discuss its benefits and drawbacks. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de2a11e532d53f1329c18c14210d281f
https://doi.org/10.1109/tmtt.2010.2050247
https://doi.org/10.1109/tmtt.2010.2050247
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
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:
IVEC 2012.
A dual-mode horn antenna with a vacuum window for 1040 GHz has been designed. Simulations indicate a near-Gaussian far-field pattern, an average half power beamwidth of 2.7° and sidelobes lower than −35 dB. The horn can be used in the input/output
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::073b7fcd3f8911abe4b27bbfbfe63de5
https://doi.org/10.1109/ivec.2012.6262125
https://doi.org/10.1109/ivec.2012.6262125
Autor:
R. Zimmermann, F. Senzel, C. am Weg, Wolff von Spiegel, T. Löffler, R. Henneberger, Hartmut G. Roskos
Publikováno v:
2009 34th International Conference on Infrared, Millimeter, and Terahertz Waves.
We present a fast-scanning active THz-camera with two different illumination techniques. The first uses local illumination and offers high dynamic range while the second uses global illumination and allows to expand the range of angles over which spe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f53e273cc1c27f4308f126c000e417cd
https://doi.org/10.1109/icimw.2009.5325550
https://doi.org/10.1109/icimw.2009.5325550
Autor:
Wolff von Spiegel, Hartmut G. Roskos, R. Zimmermann, Christian Am Weg, Torsten Loeffler, Ralf Henneberger
Publikováno v:
Journal of Infrared, Millimeter, and Terahertz Waves.
We report on the realization of two active, fully electronic THz cameras, both operating at room temperature, but at different frequencies (645 GHz and 300 GHz, respectively). Active illumination together with the frequency-modulated-continuous-wave
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::968d675454f5e4f4773c91ad50e75bd4
https://doi.org/10.1007/s10762-009-9565-8
https://doi.org/10.1007/s10762-009-9565-8
Publikováno v:
Optics express. 13(1)
We present experimental results with binary amplitude Fresnel lens arrays and binary phase Fresnel lens arrays used to implement integral imaging systems. Their optical performance is compared with high quality refractive microlens arrays and pinhole
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::70ff7bcc2c660d9354745fa90583343a
https://pubmed.ncbi.nlm.nih.gov/19488356
https://pubmed.ncbi.nlm.nih.gov/19488356
Autor:
Torsten Löffler, Hartmut G. Roskos, Volker Blank, Wolff von Spiegel, Fanzhen Meng, Mark D. Thomson
Publikováno v:
Applied Optics. 48:5197
We have characterized the homogeneity of large-area (10 mm x 10 mm) CdTe(110) and ZnTe(110) crystals using a raster electro-optic scanning method to assess their usability in two-dimensional electro-optic terahertz (THz) imaging with parallel read ou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::24245161c7ba3be51bdc5554ab230851
https://doi.org/10.1364/ao.48.005197
https://doi.org/10.1364/ao.48.005197
Autor:
Mark D. Thomson, Hartmut G. Roskos, Torsten Löffler, Bernhard Hils, Christian Am Weg, Wolff von Spiegel, Dominic Doyle, Peter de Maagt, Ralf D. Geckeler
Publikováno v:
Optics Express. 16:11289
Characterization of the topography of materials by interferometry in the visible or near-IR wavelength regime becomes difficult or impossible if the surface is rough on the length scale of a tenth of the wavelength and more. In this case, THz radiati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb778b5b7efec3874a71a09648e57944
https://doi.org/10.1364/oe.16.011289
https://doi.org/10.1364/oe.16.011289