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Opt Express. 2009 Apr 27;17(9):7377-82.

Liquid crystal based electrically switchable Bragg structure for THz waves.

Author information

  • 1Institute for High-Frequency Technology, Braunschweig, Germany. r.wilk@menlosystems.com

Abstract

We demonstrate the first electronically switchable Bragg structure for THz frequencies. The structure works as stop-band filter and as mirror. It exhibits the 60 GHz broad stop-band around 300 GHz which can be removed by reorienting liquid crystal molecules in an external electric field. Our first proof-of-principle experiments agree very well with transfer matrix calculations.

PMID:
19399116
[PubMed - indexed for MEDLINE]
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