A Tunable Reflector Based On Vo2 Thin Films In Terahertz Optical Systems

Wei En Lai,Huai Wu Zhang,Qi Ye Wen,Dong Hong Qiu

INTERNATIONAL SYMPOSIUM ON OPTOELECTRONIC TECHNOLOGY AND APPLICATION 2014: INFRARED TECHNOLOGY AND APPLICATIONS（2014）

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Abstract

We present a tunable reflector based on VO2 thin films in the terahertz frequency range. The reflectance of the reflector in the terahertz region can be tuned by controlling electrical properties of VO2 thin films. The change of electrical properties of VO2 originates from an insulator-metal transition of VO2. The experimental results demonstrated the effectiveness of the tunable reflector in the terahertz region. The tunable reflector of the VO2 thin films is very suitable for terahertz systems.

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Key words

Vanadium dioxide (VO2),Terahertz time domain spectroscopy (THz-TDS),Maxwell-Garnett EMT

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