UM
Multifunctional Hybrid Metasurfaces for Dynamic Tuning of Terahertz Waves
Cai H.2; Chen S.1; Zou C.1; Huang Q.2; Liu Y.1; Hu X.2; Fu Z.1; Zhao Y.2; He H.1; Lu Y.2
2018-07-18
Source PublicationAdvanced Optical Materials
ISSN21951071
Volume6Issue:14
AbstractActively tuning optical transmission through hybrid metasurfaces incorporated with multifunctional active media holds great promise for the next generation optical devices. In the terahertz (THz) range, they remain rare due to the lack of dynamic and multifunctional designs and materials. Here, a vanadium dioxide (VO )-based hybrid metasurface is proposed to present multifunctional control of THz waves via electrically triggering and ultrafast optical excitation. By minimizing the thermal mass of VO and optimizing the VO patterns within two side gaps of the asymmetric split-ring resonators, a hybrid metasurface which can tune the THz wave with an absolute modulation depth up to 54% and a figure of merit as high as 138% is hereby presented. The hybrid metasurface achieves a switching time of 2.2 s under the electrically triggering and offers an ultrafast modulation within 30 ps under the femtosecond pulse excitation. More interestingly, owing to the intrinsic hysteresis behavior of VO , the hybrid metasurface exhibits distinguishing multistate transmission amplitudes with a single electrical input. In short, this study paves the way for robust multifunctionality in electric-controlled terahertz switching, photonic memory, and ultrafast terahertz optics.
Keywordhybrid metasurfaces memory multifunction terahertz vanadium dioxide
DOI10.1002/adom.201800257
URLView the original
Language英語
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Cited Times [WOS]:20   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.University of Science and Technology of China
2.Hefei National Laboratory for Physical Sciences at Microscale
Recommended Citation
GB/T 7714
Cai H.,Chen S.,Zou C.,et al. Multifunctional Hybrid Metasurfaces for Dynamic Tuning of Terahertz Waves[J]. Advanced Optical Materials,2018,6(14).
APA Cai H..,Chen S..,Zou C..,Huang Q..,Liu Y..,...&Lu Y..(2018).Multifunctional Hybrid Metasurfaces for Dynamic Tuning of Terahertz Waves.Advanced Optical Materials,6(14).
MLA Cai H.,et al."Multifunctional Hybrid Metasurfaces for Dynamic Tuning of Terahertz Waves".Advanced Optical Materials 6.14(2018).
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