Journal of Infrared, Millimeter, and Terahertz Waves

, Volume 33, Issue 11, pp 1117–1122

Discrete Terahertz Beam Steering with an Electrically Controlled Liquid Crystal Device

Authors

    • Fachbereich PhysikPhilipps Universität Marburg
  • Marco Reuter
    • Fachbereich PhysikPhilipps Universität Marburg
  • Maik Scheller
    • Fachbereich PhysikPhilipps Universität Marburg
  • Kristian Altmann
    • Fachbereich PhysikPhilipps Universität Marburg
  • Nico Vieweg
    • Fachbereich PhysikPhilipps Universität Marburg
  • Roman Dabrowski
    • Institute of ChemistryMilitary University of Technology
  • Jason A. Deibel
    • Department of PhysicsWright State University
  • Martin Koch
    • Fachbereich PhysikPhilipps Universität Marburg
Article

DOI: 10.1007/s10762-012-9927-5

Cite this article as:
Scherger, B., Reuter, M., Scheller, M. et al. J Infrared Milli Terahz Waves (2012) 33: 1117. doi:10.1007/s10762-012-9927-5

Abstract

We present an electronic beam switching/steering device for operation at THz frequencies. The propagation direction of the THz beam is switched via electronic manipulation of the refractive index of a liquid crystal. The design of the steering device and the parameters of the liquid crystal are described and angle-dependent THz-TDS measurements of the beam steering are reported. This device is able to deflect the propagation direction of the THz beam by 6.3 °. This particular device approach offers a viable option for beam steering/switching in various THz applications including fiber switches, scanning imagers, and free-space communication systems in which the detector or emitter is in motion.

Keywords

THz spectroscopyQuasi-opticsLiquid Crystal (LC)

Copyright information

© Springer Science+Business Media, LLC 2012