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We investigate the THz properties of nematic liquid crystals as a function of temperature. In particular we focus on the refractive index the absorption and the birefringence. From the measured data, molecular properties (polarizability and S parameter) are deduced. We discuss the impact of the molecular chain length on the polarizability.
We report on the temperature dependence of the refractive index of nematic liquid crystals in the terahertz frequency range. From the measured data, molecular properties are determined by different approaches and the impact of the molecular chain length on the polarizability is discussed.
Dielectric reflectors have recently been proposed to be a key component for future wireless terahertz communication systems. Here, we investigate the dispersion properties of a mirror which consists of nine layers of two different dielectric materials. The layers differ considerably in their refractive index. The structure is highly reflecting and omnidirectional in a very broad frequency band. We...
Dielectric mirrors have recently been proposed to be a key component for future wireless terahertz communication systems. Here, we examine the dispersion properties of a reflector that consists of nine layers with two different materials. The refractive index of the layers differs considerably. The mirror is highly reflecting and omnidirectional in a very extensive frequency band. We find that the...
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