Electrically Tunable Terahertz Notch Filters


DOI: 10.1007/s10762-012-9877-y

Cite this article as:
Vieweg, N., Born, N., Al-Naib, I. et al. J Infrared Milli Terahz Waves (2012) 33: 327. doi:10.1007/s10762-012-9877-y


In this letter we present a switchable THz notch filter. The filter contains a liquid crystal layer that acts as a half wave retarder in one state and as an isotropic layer in the other state. The device combines three unique properties: it can be switched electrically, it provides a filter depth of 35 dB at 350 GHz and it can be tuned over wide frequency range from 350 GHz to 700 GHz.


Liquid crystalsSwitchable terahertz devicesBirefringence

Copyright information

© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  1. 1.Faculty of PhysicsPhilipps University of MarburgMarburgGermany