Controlling intensity and phase of terahertz radiation with an optically thin liquid crystal-loaded metamaterial
We experimentally demonstrate intensity and phase modulation of terahertz radiation using an actively controlled large-area planar metamaterial (metafilm) hybridized with a 12lm thick layer of a liquid crystal. Active control was introduced through in-plane electrical switching of the liquid crystal,...
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Main Authors: | , , , , , |
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Other Authors: | |
Format: | Article |
Language: | English |
Published: |
2014
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Subjects: | |
Online Access: | https://hdl.handle.net/10356/94537 http://hdl.handle.net/10220/18375 |
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Institution: | Nanyang Technological University |
Language: | English |
Summary: | We experimentally demonstrate intensity and phase modulation of terahertz radiation using an actively controlled large-area planar metamaterial (metafilm) hybridized with a 12lm thick layer of a liquid crystal. Active control was introduced through in-plane electrical switching of the liquid crystal, which enabled to achieve a reversible single-pass absolute transmission change of 20% and a phase
change of 40 at only 20 V. |
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