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Updated: Feb 5, 2026
09:33
Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
Published on: June 7, 2019
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Polarization-selective dual-wavelength gap-surface plasmon metasurfaces.
Optics Express
|September 7, 2018
Summary
We developed a new method for creating dual-wavelength gap-surface plasmon metasurfaces (GSPMs) that can independently control light polarization at two wavelengths. These GSPMs function as polarization beam splitters and focusing mirrors simultaneously.
Area of Science:
- Metasurfaces
- Plasmonics
- Nanophotonics
Background:
- Metasurfaces offer advanced control over light properties.
- Achieving dual-wavelength functionality with polarization selectivity is challenging.
Purpose of the Study:
- To present a general method for designing polarization-selective dual-wavelength gap-surface plasmon metasurfaces (GSPMs).
- To demonstrate GSPMs as polarization beam splitters and focusing metamirrors at 850 nm and 1550 nm.
Main Methods:
- Designing GSPMs with strongly anisotropic meta-atoms in a rectangular lattice.
- Utilizing two degrees of freedom for independent control of phase and amplitude for orthogonal polarizations.
- Simultaneously operating at two discrete wavelengths (850 nm and 1550 nm).
Main Results:
- Successfully designed and demonstrated dual-wavelength GSPMs.
- GSPMs functioned as polarization beam splitters and focusing metamirrors.
- Independent control over reflection phase and amplitude for orthogonal polarizations at both wavelengths was achieved.
Conclusions:
- A general method for realizing polarization-selective dual-wavelength GSPMs was presented.
- The developed GSPMs offer simultaneous dual-wavelength operation.
- This approach enables the design of multiwavelength, multifunctional metasurfaces for diverse applications.
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