Characterization of micro-powders for the fabrication of compression molded THz lenses

Benedikt Scherger, Steffen Wietzke, Maik Scheller, Nico Vieweg, Matthias Wichmann, Martin Koch, Karin Wiesauer

Research output: Contribution to journalArticle

24 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)943-951
Number of pages9
JournalJournal of Infrared, Millimeter, and Terahertz Waves
Volume32
Issue number7
DOIs
StatePublished - Jul 1 2011

Keywords

  • Material parameters
  • Micro-powders
  • Quasi-optics
  • THz spectroscopy

ASJC Scopus subject areas

  • Radiation
  • Instrumentation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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