Tunable dual-functional metasurface for wideband cross-polarization conversion and wideband absorption

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dc.contributor.authorDS, Chandu
dc.contributor.authorNagini, K.B.S. Sri
dc.contributor.authorSoh, Ping Jack
dc.contributor.authorKarthikeyan, S.S.
dc.date.accessioned2026-11-02T04:54:59Z
dc.date.available2026-11-02T04:54:59Z
dc.date.issued2023-10-24
dc.description.abstractThis work presents a tunable and wideband dual-functional metasurface (DFM) operating in the terahertz regime with highest overlap bandwidth (OBW). The structure consists of a double-split ring resonator and a meandered square ring resonator based on VO2 to achieve reflective cross-polarization conversion and absorption functionalities, respectively. When the phase changing material VO2 is in its metallic state, the metasurface acts as a perfect absorber with a peak absorption of ≥ 90% over the operating band of 2.3–4.01 THz. When VO2 is in its insulating state, the metasurface acts as a reflective cross-polarization converter over a wideband from 1–4.1 THz with high polarization conversion ratio of ≥ 90%. The proposed DFM has a stable response up to 45∘ of incidence in the polarization converter state and 60∘ of angular stability under the absorber state. Further, tunability is achieved by integrating photoconductive silicon and controlling the optical pump intensity in the double-split ring and meandered. square ring resonators. The proposed metasurface finds its applications in security, detection and THz communication systems.
dc.identifier.issn22113797
dc.identifier.urihttps://doi.org/10.1016/j.rinp.2023.107104
dc.identifier.urihttp://nitt.ndl.gov.in/handle/123456789/384
dc.language.isoen
dc.publisherElsevier B. V.
dc.relation.ispartofseriesResults in Physics; Vol. 54/ Art. 107104
dc.titleTunable dual-functional metasurface for wideband cross-polarization conversion and wideband absorption
dc.typeArticle
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