Transfer matrix method for precise determination of thicknesses in a 150-ply polyethylene composite material

Autor: Rene Beigang, Frank Ospald, Danuta Miedzińska, Soufiene Krimi, Norbert Palka

Publikováno v: Proceedings of 40th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)

The multilayer structure of an ultra-high molecular weight polyethylene composite material was investigated in the terahertz (THz) spectral range by means of time domain spectroscopy (TDS) technique. Such structures consist of many alternating layers

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2e1e0e4799cfefe94d468e270c459fcc
https://doi.org/10.1109/irmmw-thz.2015.7327397

Comparison of terahertz technologies for detection and identification of explosives

Autor: Frank Ellrich, Janez Trontelj, Rene Beigang, Norbert Palka, Arthur D. van Rheenen, Tolga Kartaloglu, Asaf Behzat Sahin, Hakan Altan, Sandra Biedron, Magnus W. Haakestad, Frank Ospald, Sławomir Dyjak, Elżbieta Czerwińska, Daniel Hübsch, Michał Walczakowski, Andrej Švigelj, Aleksander Sešek, Ekmel Ozbay, Uroš Puc

Publikováno v: Proceedings-Terahertz Physics, Devices, and Systems VIII: Advanced Applications in Industry and Defense

Date of Conference: 5-9 May 2014 Conference name: SPIE Sensing Technology + Applications, 2014 - Proceedings - Terahertz Physics, Devices, and Systems VIII: Advanced Applications in Industry and Defense We present results on the comparison of differe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e99ebb3c2f0acbd3391be5ed949b44f0
https://hdl.handle.net/11693/27630

Generation and detection of THz radiation up to 4.5 THz using LTG-GaAs PCAs illuminated at 1560 nm

Autor: Jan-Martin Rämer, Georg von Freymann, Frank Ospald, Rene Beigang

Publikováno v: 2013 38th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).

We demonstrate generation and detection of terahertz radiation using low-temperature grown GaAs photoconductive switches excited at 1560 nm. The dependence of the DC photocurrent and the terahertz amplitude on the input power of the detector and emit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8d0b4d0e6b4d8bf09fbeb99926dfab0f
https://doi.org/10.1109/irmmw-thz.2013.6665605

Structural health monitoring using a scanning THz system

Autor: R. Martinez, Edison Cristofani, Joachim Jonuscheit, Frank Ospald, Benoit Recur, P. Venegas, S. Wohnsiedler, Patrick Mounaix, Ion López, W. Vleugels, Anna Brook, Carsten Matheis, Marijke Vandewal, Rene Beigang, J-P. Guillet, I. Manek Honninger, Y. Sternberg

Publikováno v: 2013 38th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)
2013 38th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Sep 2013, Mainz, Germany. pp.1-2, ⟨10.1109/IRMMW-THz.2013.6665870⟩

International audience; Terahertz waves can provide in-depth information on defects for structural health monitoring of composite materials. This paper describes the technology of a continuous-wave and a time-domain terahertz system operating on a 2-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb2e9e64ecc2d97ae5bb4d9ae5e1cded
https://doi.org/10.1109/irmmw-thz.2013.6665870

Comparison of high-speed terahertz optical sampling techniques at different wavelengths

Autor: Rene Beigang, Frank Ospald, Daniel Molter, W. Zouaghi

Publikováno v: 2012 37th International Conference on Infrared, Millimeter, and Terahertz Waves.

We present a comparison of fast optical sampling in a THz time domain system using ASOPS and ECOPS and a conventional opto-mechanical TDS based system. The system is operated both with the fundamental (1560 nm) and the frequency doubled output of a f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::396ca8f26bd81c3a4276539e161efab6
https://doi.org/10.1109/irmmw-thz.2012.6380444