Polarization state generation and measurement with a single metasurface

Area of Science:

• Optics and Photonics
• Materials Science

Background:

• Metasurfaces offer unique optical properties due to their subwavelength structures.
• Designing metasurfaces for specific polarization control is an active research area.

Purpose of the Study:

• To design a metasurface grating capable of generating arbitrary polarization states.
• To demonstrate the reverse application of the metasurface as a snapshot polarimeter.
• To evaluate the performance of the metasurface polarimeter against commercial devices.

Main Methods:

• Design and fabrication of a metasurface grating with polarization-dependent elements.
• Characterization of the generated polarization states for different diffraction orders.
• Implementation and testing of the metasurface in a reverse configuration for polarimetry.
• Comparison of measurement results with a commercial polarimeter.

Main Results:

• The metasurface grating successfully produced specified polarization states for known incident polarizations.
• The reverse configuration enabled parallel snapshot polarimetry with minimal bulk optics.
• The metasurface polarimeter demonstrated favorable performance in measuring partially polarized light.

Conclusions:

• Metasurfaces provide a versatile platform for advanced polarization optics and compact polarimetry.
• This technology is suitable for applications demanding lightweight, low-cost polarization solutions.
• The developed metasurface grating has significant implications for polarization imaging and analysis.