Liquid crystal based electrically switchable Bragg structure for THz waves.
作者信息
Wilk Rafal, Vieweg Nico, Kopschinski Olaf, Koch Martin
机构信息
Institute for High-Frequency Technology, Braunschweig, Germany.
出版信息
Opt Express. 2009 Apr 27;17(9):7377-82. doi: 10.1364/oe.17.007377.
PMID:19399116
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.
摘要
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