1.
Opt Express
; 17(9): 7377-82, 2009 Apr 27.
Artigo
em Inglês
| MEDLINE
| ID: mdl-19399116
RESUMO
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.