Terahertz properties of liquid crystals

Author

Park, Hongkyu ; Fan, Fan ; Lim, Meehyun ; Han, Haewook ; Chigrinov, Vladimir G. ; MacPherson, Emma

Author_Institution

ECE Dept., Hong Kong Univ. of Sci. & Technol., Kowloon, China

fYear

2011

fDate

2-7 Oct. 2011

Firstpage

1

Lastpage

3

Abstract

Liquid crystals (LCs) represent a very interesting material in the visible range but their properties in the terahertz (THz) range have not been extensively investigated yet. In this paper, we have investigated the THz properties of a set of LCs E7, BL037, and RDP97304 using terahertz time-domain spectroscopy. Refractive indices and absorption coefficients of ordinary and extraordinary axis of LCs are extracted from the measurements. We find that RDP97304 has the largest birefringence and smallest absorption in the THz range compared to E7 and BL037. Thus, RDP97304 is useful for developing efficient and fast THz devices.

Keywords

absorption coefficients; birefringence; liquid crystals; refractive index; terahertz wave devices; terahertz wave spectra; BL037 LC; E7 LC; RDP97304 LC; THz devices; THz range; absorption coefficients; birefringence; liquid crystals; refractive indices; terahertz properties; terahertz time-domain spectroscopy; Absorption; Liquid crystals; Optical devices; Optical refraction; Optical variables control; Optimized production technology; Refractive index;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter and Terahertz Waves (IRMMW-THz), 2011 36th International Conference on

Conference_Location

Houston, TX

ISSN

2162-2027

Print_ISBN

978-1-4577-0510-6

Electronic_ISBN

2162-2027

Type

conf

DOI

10.1109/irmmw-THz.2011.6104918

Filename

6104918