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 n e and the ordinary refractive index n o 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
Full Article | PDF ArticleMore Like This
Masahito Oh-e, Hiroshi Yokoyama, Mattijs Koeberg, Euan Hendry, and Mischa Bonn
Opt. Express 14(23) 11433-11441 (2006)
Chan-Shan Yang, Chia-Jen Lin, Ru-Pin Pan, Christopher T. Que, Kohji Yamamoto, Masahiko Tani, and Ci-Ling Pan
J. Opt. Soc. Am. B 27(9) 1866-1873 (2010)
Oksana Trushkevych, Huan Xu, Tianxin Lu, J. Axel Zeitler, Rakchanok Rungsawang, Felix Gölden, Neil Collings, and William A. Crossland
Appl. Opt. 49(28) 5212-5216 (2010)