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Optical Materials Express

Optical Materials Express

  • Editor: David Hagan
  • Vol. 4, Iss. 3 — Mar. 1, 2014
  • pp: 449–457

Time-domain modeling of dispersive and lossy liquid-crystals for terahertz applications

D. C. Zografopoulos, K. P. Prokopidis, R. Dąbrowski, and R. Beccherelli  »View Author Affiliations


Optical Materials Express, Vol. 4, Issue 3, pp. 449-457 (2014)
http://dx.doi.org/10.1364/OME.4.000449


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Abstract

A numerical framework based on the finite-difference time-domain method is proposed for the rigorous study of electro-optically tunable terahertz devices based on liquid crystals. The formulation accounts for both the liquid-crystal full-tensor anisotropy and the dispersion of its complex refractive indices, which is described via modified Lorentzian terms. Experimentally characterized liquid-crystalline materials in the terahertz spectrum are fitted and modeled in benchmark examples, directly compared with reference analytical or semi-analytical solutions. In addition, the efficiency of broadband time-domain modeling of the proposed technique is also demonstrated by accurately reproducing time-domain spectroscopy measurements.

© 2014 Optical Society of America

OCIS Codes
(160.3710) Materials : Liquid crystals
(160.4760) Materials : Optical properties
(260.2030) Physical optics : Dispersion
(050.1755) Diffraction and gratings : Computational electromagnetic methods
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:
Liquid Crystals

History
Original Manuscript: November 26, 2013
Revised Manuscript: December 13, 2013
Manuscript Accepted: December 13, 2013
Published: February 10, 2014

Citation
D. C. Zografopoulos, K. P. Prokopidis, R. Dąbrowski, and R. Beccherelli, "Time-domain modeling of dispersive and lossy liquid-crystals for terahertz applications," Opt. Mater. Express 4, 449-457 (2014)
http://www.opticsinfobase.org/ome/abstract.cfm?URI=ome-4-3-449


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