journal article·2020-04-01Open access

Optically tunable single narrow band all-dielectric terahertz metamaterials absorber

Yue Wang, Lisha Yue, Zijian Cui, Xiaoju Zhang, Xiang Zhang, YongQiang Zhu, Kuang Zhang

AIP Advances· Volume 10· Issue 4

Abstract

In this work, we numerically demonstrated a single narrow band THz absorber based on cylindrically shaped periodical p-type doped silicon with excellent attributes, including polarization insensitivity and optical tunability. Good absorption characteristics were demonstrated at 0.57 THz with an absorption of nearly 99.75% and a quality factor of 11.278. Furthermore, its absorbance could be flexibly tuned from above 99% to less than 35% by changing the pump beam fluence from 0 µJ/cm2 to 3000 µJ/cm2. The demonstrated tunability may find potential applications in dynamic functional THz devices.
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Research context

OpenAlex topics: Metamaterials and Metasurfaces Applications · Plasmonic and Surface Plasmon Research · Terahertz technology and applications

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Affiliations

Key Laboratory of Ultrafast Photoelectric Technology and Terahertz Science in Shaanxi, Xi’an University of Technology 1 , Xi’an 710048, China

Key Laboratory of Engineering Dielectric and Its Application, Ministry of Education 2 , Harbin 150080, China

School of Electronics and Information Engineering, Harbin Institute of Technology 3 , Harbin 150001, China

Funding

National Natural Science Foundation of China · Natural Science Foundation of Shaanxi Province, China · Open Project of Key Laboratory of Engineering Dielectrics and Its Applications, Ministry of Education

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