Terahertz Time-Domain Spectroscopy Studies of the Optical Constants of the Nematic Liquid Crystal 5CB
Applied Optics, Vol. 42, Issue 13, pp. 2372-2376 (2003)
http://dx.doi.org/10.1364/AO.42.002372
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Abstract
The optical constants of a nematic liquid crystal, 4′-n-pentyl-4-cyanobiphenyl (5CB), in the frequency range 0.3–1.4 THz were determined by terahertz (THz) time-domain spectroscopy. The real parts of the extraordinary refractive index ne and the ordinary refractive index no of 5CB varied from 1.74 to 2.04 and from 1.59 to 1.83, respectively. Liquid-crystal 5CB exhibits a relatively small absorption loss in this frequency range. The birefringence of 5CB was found to be as large as 0.21. The experimental results indicate that liquid-crystal 5CB is potentially useful for device applications in the THz frequency range.
© 2003 Optical Society of America
[Optical Society of America ]
OCIS Codes
(160.3710) Materials : Liquid crystals
(160.4760) Materials : Optical properties
(300.6270) Spectroscopy : Spectroscopy, far infrared
(300.6530) Spectroscopy : Spectroscopy, ultrafast
(320.7150) Ultrafast optics : Ultrafast spectroscopy
Citation
Tsong-Ru Tsai, Chao-Yuan Chen, Ci-Ling Pan, Ru-Pin Pan, and Xi-Cheng Zhang, "Terahertz Time-Domain Spectroscopy Studies of the Optical Constants of the Nematic Liquid Crystal 5CB," Appl. Opt. 42, 2372-2376 (2003)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-42-13-2372
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