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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
PubMed
Summary
This summary is machine-generated.

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.

Keywords:
Pancharatnam−Berry phasemultifunctional holographynonlinear metasurfacesterahertz technology

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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.