B
Bernd M. Fischer
Researcher at University of Marburg
Publications - 168
Citations - 6020
Bernd M. Fischer is an academic researcher from University of Marburg. The author has contributed to research in topics: Terahertz radiation & Terahertz spectroscopy and technology. The author has an hindex of 32, co-authored 165 publications receiving 5423 citations. Previous affiliations of Bernd M. Fischer include University of Regensburg & University of Adelaide.
Papers
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Metal-insulator phase transition in a VO2 thin film observed with terahertz spectroscopy
Peter Uhd Jepsen,Bernd M. Fischer,Andreas Thoman,Hanspeter Helm,Jae Yong Suh,Rene Lopez,Richard F. Haglund +6 more
TL;DR: In this paper, the authors investigate the dielectric properties of a thin VO2 film in the terahertz frequency range in the vicinity of the semiconductor-metal phase transition and show that even at temperatures significantly above the transition temperature the formation of a uniform metallic phase is not complete.
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Chemical recognition in terahertz time-domain spectroscopy and imaging
TL;DR: In this article, the authors present an overview of chemical recognition with ultrashort THz pulses and demonstrate how signals for chemical recognition of substances in sealed containers can be obtained, based on the broadband absorption spectra of the substances.
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THz porous fibers: design, fabrication and experimental characterization
Shaghik Atakaramians,V Shahraam Afshar,Heike Ebendorff-Heidepriem,Michael Nagel,Bernd M. Fischer,Derek Abbott,Tanya M. Monro +6 more
TL;DR: The effective refractive index measured by terahertz time domain spectroscopy shows a good agreement between the theoretical and experimental results indicating a lower dispersion for THz porous fiber compared to THz microwires.
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Terahertz time-domain spectroscopy and imaging of artificial RNA
Bernd M. Fischer,Matthias C. Hoffmann,Hanspeter Helm,Rafal Wilk,Frank Rutz,Thomas Kleine-Ostmann,Martin Koch,Peter Uhd Jepsen +7 more
TL;DR: Under controlled conditions it is possible to use the THz image to distinguish between the two RNA strands, and the requirements to sample preparation imposed by the lack of sharp spectral features in the absorption spectra are discussed.
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Porous fibers: a novel approach to low loss THz waveguides.
TL;DR: This work proposes a novel class of optical fiber with a porous transverse cross-section that is created by arranging sub-wavelength air-holes within the core of the fiber to offer a combination of low transmission loss and high mode confinement in the THz regime.