Synergetic full-parametric Aharonov-Anandan and Pancharatnam-Berry phase for arbitrary polarization and wavefront...

Area of Science:

• Metasurface technology
• Electromagnetic devices
• Optical physics

Background:

• Metasurfaces offer advanced polarization control, but typically convert between specific linear and circular polarizations.
• Full-parametric Jones matrix components are crucial for obtaining scattering information in remote sensing and radar imaging.
• Existing metasurfaces have limitations in achieving arbitrary polarization control and simultaneous wavefront manipulation.

Purpose of the Study:

• To propose a novel spin-decoupled paradigm for metasurfaces by merging Aharonov-Anandan (AA) phase and Pancharatnam-Berry (PB) phase mechanisms.
• To achieve elegant amplitude-phase controlling and generate arbitrary polarized waves using the proposed diatomic metasurface.
• To enable simultaneous broadband arbitrary linear polarization-to-linear polarization (LP-to-LP) conversion and wavefront control.

Main Methods:

• Derivation of the full-parametric Aharonov-Anandan (AA) phase Jones matrix (J_AAL).
• Development of a spin-decoupled paradigm by combining AA phase and PB phase mechanisms.
• Design, fabrication, and experimental characterization of two types of meta-devices based on the proposed paradigm.

Main Results:

• The proposed method enables simultaneous broadband arbitrary LP-to-LP conversion and wavefront control with a relative bandwidth of 43.5%.
• The developed meta-devices demonstrate superior performance compared to combinations of propagation and PB phase.
• Experimental characterization validates the theoretical foundation for spin-decoupled phase manipulation and amplitude-phase control of AA phase.

Conclusions:

• The novel spin-decoupled paradigm provides a theoretical foundation for advanced phase manipulation in metasurfaces.
• This strategy offers a robust platform for designing devices with arbitrary polarization and wavefront control.
• The findings pave the way for enhanced applications in remote sensing, radar imaging, and other electromagnetic technologies.