Characterization of Micro-Powders for the Fabrication of Compression Molded THz Lenses |
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Authors: | Benedikt Scherger Steffen Wietzke Maik Scheller Nico Vieweg Matthias Wichmann Martin Koch Karin Wiesauer |
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Affiliation: | 1.Fachbereich Physik,Philipps Universit?t Marburg,Marburg,Germany;2.RECENDT Research Center for Non Destructive Testing GmbH,Linz,Austria |
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Abstract: | We investigate different micro-powders that can be used as base materials for THz lenses fabricated by compression molding.
For this application materials with a very weak THz absorbance and low dispersion are required. By measuring the THz absorption
coefficient and refractive index of pellets pressed from the different micro-powders, we identify several materials that are
well suited for the fabrication of compression molded THz lenses (CMLs). In addition, a considerable range of the refractive
index is covered by the samples, which will allow for the fabrication of CMLs with different focal lengths for one and the
same lens design. |
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