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Updated: Oct 2, 2025
11:10
Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model
Published on: May 23, 2018
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Versatile polarization manipulation in vanadium dioxide-integrated terahertz metamaterial.
Optics Express
|February 25, 2022
Summary
This study presents a switchable terahertz metamaterial using vanadium dioxide (VO2) for versatile polarization control. It enables flexible switching between dual-band asymmetric transmission and reflective half-wave plate functionalities.
Area of Science:
- Optics and Photonics
- Materials Science
- Electromagnetism
Background:
- Metamaterials offer unique light manipulation capabilities, particularly in the terahertz (THz) spectrum.
- Switchable and versatile polarization control is essential for advanced THO applications in imaging, sensing, and communication.
Purpose of the Study:
- To investigate versatile polarization manipulation in a hybrid THz metamaterial.
- To achieve flexible switching between dual-band asymmetric transmission and dual-band reflective half-wave plate functionalities.
Main Methods:
- Design and simulation of a hybrid metamaterial comprising bilayer rectangular rods and a vanadium dioxide (VO2) layer.
- Analysis of the VO2 phase transition's effect on polarization properties.
- Characterization of dual-band asymmetric transmission and reflective half-wave plate performance, including bandwidth and polarization conversion ratio (PCR).
Main Results:
- Demonstrated flexible switching enabled by the VO2 phase transition.
- Achieved dual-band asymmetric transmission with FWHM bandwidths of 0.77 THz and 0.21 THz.
- Obtained a PCR over 0.9 for the reflective half-wave plate in the 1.01-1.17 THz and 1.47-1.95 THz ranges.
- Studied angular dependences of polarization properties.
Conclusions:
- The proposed switchable polarization metamaterial offers versatile and broadband control of terahertz waves.
- This work is significant for developing multifunctional polarization devices and multichannel polarization detection systems.
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