THz Properties of Nematic Liquid Crystals

作者: Nico Vieweg , Mohammad Khaled Shakfa , Benedikt Scherger , Martin Mikulics , Martin Koch

DOI: 10.1007/S10762-010-9721-1

关键词:

摘要: We systematically study the terahertz (THz) properties of a set nematic liquid crystals. use THz time domain spectroscopy to obtain data between 0.2 up 2.5 THz. Such broadband has not yet been reported. From measured data, we extract macroscopic such as birefringence, refractive indices and absorption coefficients for ordinary extraordinary polarization. The impact different side chains core structures on anisotropy are discussed. This paper will serve base can be very useful design new crystal material.

参考文章(46)
R.-P. Pan, T.-R. Tsai, C.-Y. Chen, C.-L. Pan, Optical Constants of Two Typical Liquid Crystals 5CB and PCH5 in the THz Frequency Range Journal of Biological Physics. ,vol. 29, pp. 335- 338 ,(2003) , 10.1023/A:1024485918938
Christian Jansen, Mohammad Khaled Shakfa, Maik Scheller, Norman Krumbholz, Rafal Wilk, Martin Mikulics, Martin Koch, Nico Vieweg, Molecular properties of liquid crystals in the terahertz frequency range Optics Express. ,vol. 18, pp. 6097- 6107 ,(2010) , 10.1364/OE.18.006097
Ru-Pin Pan, Cho-Fan Hsieh, Ci-Ling Pan, Chao-Yuan Chen, Temperature-dependent optical constants and birefringence of nematic liquid crystal 5CB in the terahertz frequency range Journal of Applied Physics. ,vol. 103, pp. 093523- ,(2008) , 10.1063/1.2913347
Carlito S. Ponseca, Ohki Kambara, Shintaro Kawaguchi, Kohji Yamamoto, Keisuke Tominaga, Low-Frequency Spectra of Amino Acids and Short-Chain Peptides Studied by Terahertz Time-Domain Spectroscopy Journal of Infrared, Millimeter, and Terahertz Waves. ,vol. 31, pp. 799- 809 ,(2010) , 10.1007/S10762-010-9636-X
T. Kleine-Ostmann, K. Pierz, G. Hein, P. Dawson, M. Koch, Audio signal transmission over THz communication channel using semiconductor modulator Electronics Letters. ,vol. 40, pp. 124- 126 ,(2004) , 10.1049/EL:20040106
Cameron J. E. Straatsma, Michael A. Startsev, Abdulhakem Y. Elezzabi, An Investigation of Terahertz Particle Plasmons: Affect of Particle Size on the Transparency of a Metallic Particle Ensemble Journal of Infrared, Millimeter, and Terahertz Waves. ,vol. 31, pp. 659- 666 ,(2010) , 10.1007/S10762-010-9623-2
A. V. N. Gupta, J. V. Rao, P. Venkatacharyulu, Multifrequency ultrasonic investigations in the liquid crystal 5 OCB Crystal Research and Technology. ,vol. 22, pp. 1313- 1319 ,(1987) , 10.1002/CRAT.2170221019
Lionel Duvillaret, Frédéric Garet, Jean-Louis Coutaz, Highly precise determination of optical constants and sample thickness in terahertz time-domain spectroscopy Applied Optics. ,vol. 38, pp. 409- 415 ,(1999) , 10.1364/AO.38.000409
F. Rutz, T. Hasek, M. Koch, H. Richter, U. Ewert, Terahertz birefringence of liquid crystal polymers Applied Physics Letters. ,vol. 89, pp. 221911- ,(2006) , 10.1063/1.2397564
Hai-Bo Liu, Yunqing Chen, Glenn J. Bastiaans, X.-C. Zhang, Detection and identification of explosive RDX by THz diffuse reflection spectroscopy. Optics Express. ,vol. 14, pp. 415- 423 ,(2006) , 10.1364/OPEX.14.000415