Discrete terahertz beam steering with an electrically controlled liquid crystal device

Benedikt Scherger, Marco Reuter, Maik A Scheller, Kristian Altmann, Nico Vieweg, Roman Dabrowski, Jason A. Deibel, Martin Koch

Research output: Contribution to journalArticle

32 Citations (Scopus)

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.

Original languageEnglish (US)
Pages (from-to)1117-1122
Number of pages6
JournalJournal of Infrared, Millimeter, and Terahertz Waves
Volume33
Issue number11
DOIs
StatePublished - Nov 2012
Externally publishedYes

Fingerprint

beam steering
Liquid crystals
liquid crystals
beam switching
space communication
propagation
electronics
Image sensors
telecommunication
manipulators
Refractive index
Communication systems
emitters
switches
Switches
refractivity
Detectors
Scanning
scanning
fibers

Keywords

  • Liquid crystal (LC)
  • Quasi-optics
  • THz spectroscopy

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics
  • Radiation
  • Instrumentation

Cite this

Discrete terahertz beam steering with an electrically controlled liquid crystal device. / Scherger, Benedikt; Reuter, Marco; Scheller, Maik A; Altmann, Kristian; Vieweg, Nico; Dabrowski, Roman; Deibel, Jason A.; Koch, Martin.

In: Journal of Infrared, Millimeter, and Terahertz Waves, Vol. 33, No. 11, 11.2012, p. 1117-1122.

Research output: Contribution to journalArticle

Scherger, Benedikt ; Reuter, Marco ; Scheller, Maik A ; Altmann, Kristian ; Vieweg, Nico ; Dabrowski, Roman ; Deibel, Jason A. ; Koch, Martin. / Discrete terahertz beam steering with an electrically controlled liquid crystal device. In: Journal of Infrared, Millimeter, and Terahertz Waves. 2012 ; Vol. 33, No. 11. pp. 1117-1122.
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