Title :
Time-domain spectroscopy of novel nematic liquid crystals in the terahertz range
Author :
Weickhmann, C. ; Jakoby, Rolf ; Constable, Evan ; Lewis, R.A.
Author_Institution :
Inst. of Microwave Eng. & Photonics, Tech. Univ. Darmstadt, Darmstadt, Germany
Abstract :
The dielectric properties of nematic liquid crystal (LC) mixtures are measured from 300 GHz to 1500 GHz. Measurements are performed in a standard THz TDS setup. Refractive index and extinction coefficient for parallel and perpendicular orientation are calculated and compared to results obtained at 19 GHz. The investigated mixtures are of interest for Terahertz devices as their properties stay almost constant from 19 GHz to 1500 GHz.
Keywords :
dielectric resonance; extinction coefficients; liquid mixtures; nematic liquid crystals; refractive index; terahertz wave spectra; THz TDS setup; dielectric properties; extinction coefficient; frequency 19 GHz to 1500 GHz; nematic liquid crystal mixtures; refractive index; terahertz devices; time-domain spectroscopy; Dielectrics; Indexes; Liquid crystals; Optimized production technology; Refractive index;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2013 38th International Conference on
Conference_Location :
Mainz
DOI :
10.1109/IRMMW-THz.2013.6665423
