تقرير
Electromechanically Tunable Metasurface Transmission Waveplate at Terahertz Frequencies
العنوان: | Electromechanically Tunable Metasurface Transmission Waveplate at Terahertz Frequencies |
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المؤلفون: | Zhao, Xiaoguang, Schalch, Jacob, Zhang, Jingdi, Seren, Huseyin R., Duan, Guangwu, Averitt, Richard D., Zhang, Xin |
سنة النشر: | 2017 |
المجموعة: | Physics (Other) |
مصطلحات موضوعية: | Physics - Applied Physics |
الوصف: | Dynamic polarization control of light is essential for numerous applications ranging from enhanced imaging to materials characterization and identification. We present a reconfigurable terahertz metasurface quarter-waveplate consisting of electromechanically actuated micro-cantilever arrays. Our anisotropic metasurface enables tunable polarization conversion cantilever actuation. Specifically, voltage-based actuation provides mode selective control of the resonance frequency, enabling real-time tuning of the polarization state of the transmitted light. The polarization tunable metasurface has been fabricated using surface micromachining and characterized using terahertz time domain spectroscopy. We observe a ~230 GHz cantilever actuated frequency shift of the resonance mode, sufficient to modulate the transmitted wave from pure circular polarization to linear polarization. Our CMOS-compatible tunable quarter-waveplate enriches the library of terahertz optical components, thereby facilitating practical applications of terahertz technologies. |
نوع الوثيقة: | Working Paper |
DOI: | 10.1364/OPTICA.5.000303 |
URL الوصول: | http://arxiv.org/abs/1711.08003 |
رقم الأكسشن: | edsarx.1711.08003 |
قاعدة البيانات: | arXiv |
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