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Optical Materials Express

Optical Materials Express

  • Editor: David J. Hagan
  • Vol. 2, Iss. 10 — Oct. 1, 2012
  • pp: 1314–1319

Large birefringence liquid crystal material in terahertz range

Lei Wang, Xiao-wen Lin, Xiao Liang, Jing-bo Wu, Wei Hu, Zhi-gang Zheng, Biao-bing Jin, Yi-qiang Qin, and Yan-qing Lu  »View Author Affiliations

Optical Materials Express, Vol. 2, Issue 10, pp. 1314-1319 (2012)

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We develop a fluorinated phenyl-tolane based nematic mixture NJU-LDn-4 and evaluate its frequency-dependent birefringence utilizing terahertz time domain spectroscopy (THz-TDS). A large mean birefringence of 0.306 is obtained in a broad range from 0.4 to 1.6 THz, with a maximum of 0.314 at 1.6 THz. Furthermore, relation between molecular structures and birefringence property is discussed. This work reveals new insights for tailing liquid crystal molecules with desirable large birefringence in THz range, which is extremely meaningful for the design and fabrication of fast, compact and tunable terahertz devices.

© 2012 OSA

OCIS Codes
(160.3710) Materials : Liquid crystals
(260.1440) Physical optics : Birefringence
(040.2235) Detectors : Far infrared or terahertz

ToC Category:
Liquid Crystals

Original Manuscript: August 29, 2012
Manuscript Accepted: August 29, 2012
Published: August 31, 2012

Lei Wang, Xiao-wen Lin, Xiao Liang, Jing-bo Wu, Wei Hu, Zhi-gang Zheng, Biao-bing Jin, Yi-qiang Qin, and Yan-qing Lu, "Large birefringence liquid crystal material in terahertz range," Opt. Mater. Express 2, 1314-1319 (2012)

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