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Broadband Terahertz Holography Using Nonlinear Plasmonic Metasurfaces
Zixian Hu1, Symeon Sideris2,3, Cormac McDonnell2,3
1Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.
Nano Letters
|December 19, 2025
Summary
Researchers developed novel Pancharatnam-Berry phase nonlinear metasurface emitters for advanced terahertz (THz) holography. These emitters enable broadband THz beam generation and multifunctional field manipulation for THz information processing.
Area of Science:
- Photonics and Metamaterials
- Terahertz (THz) Technology
Background:
- Terahertz (THz) waves are crucial for applications in communications, sensing, and biomedical engineering.
- The development of broadband THz emitters with complex field manipulation capabilities is essential for advancing these applications.
Purpose of the Study:
- To develop Pancharatnam-Berry phase nonlinear metasurface emitters for broadband and multifunctional THz holography.
- To demonstrate the capability for complex THz field manipulation using metasurface holograms.
Main Methods:
- Design and fabrication of two types of Pancharatnam-Berry phase nonlinear metasurface holograms.
- Experimental demonstration of scalar holographic imaging and dual-polarization holographic imaging.
- Characterization of broadband frequency response up to 2.0 THz.
Main Results:
- Successful demonstration of broadband THz beam generation and multifunctional THz field manipulation.
- Achieved simultaneous broadband THz beam generation and complex field control.
- Experimental validation of holographic imaging across a broad THz frequency range.
Conclusions:
- Pancharatnam-Berry phase nonlinear metasurface emitters show significant potential as efficient THz sources.
- These emitters are suitable for advanced THz frequency information processing applications.
- The developed metasurfaces enable simultaneous broadband THz beam generation and multifunctional field manipulation.
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