THz Spectroscopy of Liquid Crystals from the CB Family

T.-R. Tsai, C.-Y. Chen, C.-L. Pan, R.-P. Pan, and X.-C. Zhang, “Terahertz Time-Domain Spectroscopy Studies of the Optical Constants of the Nematic Liquid Crystal 5CB,” Appl. Opt. 42, 2372–2376 (2003).

M. Oh-e, H. Yokoyama, M. Koeberg, E. Hendry, and M. Bonn, “High-frequency dielectric relaxation of liquid crystals: THz time-domain spectroscopy of liquid crystal colloids,” Opt. Express 14, 11433–11441 (2006).

T. Kleine-Ostmann, K. Pierz, G. Hein, P. Dawson, and M. Koch, “Audio signal transmission over THz communication channel using semiconductor modulator,” Electr. Lett. 40, 124 (2004).

R. Piesiewicz, T. Kleine-Ostmann, N. Krumbholz, D. Mittleman, M. Koch, and T. Kürner, Short-Range Ultra-Broadband Terahertz Communications: Concepts and Perspectives. IEEE Ant. and Propag. Mag. 49, 24 (2007).

C.-Y. Chen, C.-F. Hsieh, Y.-F. Lin, R.-P. Pan, and C.-L. Pan, “Magnetically tunable room-temperature 2π liquid crystal terahertz phase shifter,” Opt. Express 12, 2625–2630 (2004).

H. Zhang, P. Guo, P. Chen, S. Chang, and J. Yuan, “Liquid-crystal-filled photonic crystal for terahertz switch and filter,” J. Opt. Soc. Am. B 26, 101–106 (2009).

C.-Y. Chen, C.-L. Pan, C.-F. Hsieh, Y.-F. Lin, and R.-P. Pan, Liquid-crystal-based terahertz tunable Lyot filter. Appl. Phys. Lett. 88, 101107 (2006).

T.-R. Tsai, C.-Y. Chen, R.-P. Pan, C.-L. Pan, and X.-C. Zhang, Electrically controlled room temperature terahertz phase shifter with liquid crystal. IEEE Microwave and Wireless Components Letters 14, 2 (2004).

Z. Ghattan, T. Hasek, R. Wilk, M. Shahabadi, and M. Koch, “Sub-terahertz on-off switch based on a two-dimensional photonic crystal infiltrated by liquid crystals,” Optics Communications 281, 18 (2008).

V. Vill, “Liquid Crystal Database 4.6”, LCI Publisher (2005). http://liqcryst.chemie.uni-hamburg.de

D. Grischkowsky, S. Keiding, M. van Exter, and Ch Fattinger, “Far-infrared time-domain spectroscopy with terahertz beams of dielectrics and semiconductors,” J. Opt. Soc. Am. B 7, 2006–2015 (1990).

G. Meier and A. Saupe, “Dielectric Relaxation in Nematic Liquid Crystals,” Molecular Crystals and Liquid Crystals 1, 515–525 (1966).

W. H. De Jeu in “Liquid Crystals”, ed. Liebert, L. (Academic Press, New York, 1978), p. 109–145

P. J. Collings and M. Hird, Introduction to Liquid Crystals Chemistry and Physics (Taylor & Francis, London, 2004).

S. T. Wu, “Absorption measurements of liquid crystals in the ultraviolet, visible, and infrared,” J. Appl. Phys 84, 4462–4465 (1998).

M. Evans, M. Davis and I. Larkin, Molecular Motion and Molecular Interaction in the Nematic and Isotropic Phases of a Liquid Crystal Compound. J.C.S. Faraday II, 69, 1973

G. J. Evans, M. Evans, High and Low Frequency Torsional Absorptions in Nematic K21. J.C.S. Faraday II, 73, 1977