Highly birefringent, low-loss liquid crystals for terahertz applications | Zendy

Marco Reuter | Zendy; Nico Vieweg | Zendy; Bernd Fischer | Zendy; Monika Mikulicz | Zendy; Martín Koch | Zendy; K. Garbat | Zendy; R. Dąbrowski | Zendy

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Highly birefringent, low-loss liquid crystals for terahertz applications

Author(s) -

Marco Reuter,

Nico Vieweg,

Bernd Fischer,

Monika Mikulicz,

Martín Koch,

K. Garbat,

R. Dąbrowski

Publication year - 2013

Publication title -

apl materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.571

H-Index - 60

ISSN - 2166-532X

DOI - 10.1063/1.4808244

Subject(s) - birefringence , materials science , terahertz radiation , refractive index , attenuation coefficient , liquid crystal , absorption (acoustics) , absorbance , optoelectronics , optics , polarization (electrochemistry) , chemistry , physics , composite material

With growing interest in switchable devices for the THz frequency range, there is a strong demand for liquid crystals (LC) exhibiting both a high birefringence and a low absorption. We present the refractive index and absorption coefficient of the liquid crystal mixtures 1852 and 1825 in the frequency range between 0.2 and 2.5 THz. Both mixtures are designed specifically for high birefringence Δn of 0.32 and 0.38, respectively, in the THz region. In addition, they show low absorption coefficients for both ordinary and extraordinary polarization. This low absorbance in combination with the high birefringence makes these LCs particularly well suited for applications in switchable devices for THz optics

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