Terahertz time-domain spectroscopy studies of the optical constants of the nematic liquid crystal 5CB

被引：94

作者：

Tsai, TR ^{[1
]}

Chen, CY

Pan, CL

Pan, RP

Zhang, XC

机构：

[1] Natl Chiao Tung Univ, Hsinchu 300, Taiwan

[2] Rensselaer Polytech Inst, Dept Phys, Troy, NY 12180 USA

[3] Rensselaer Polytech Inst, Dept Electrophys, Troy, NY 12180 USA

[4] Rensselaer Polytech Inst, Inst Electroopt Engn, Troy, NY 12180 USA

来源：

APPLIED OPTICS | 2003年 / 42卷 / 13期

关键词：

D O I：

10.1364/AO.42.002372

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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. (C) 2003 Optical Society of America.

引用

页码：2372 / 2376

页数：5

共 29 条

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