Matrix Fourier optics enables a compact full-Stokes polarization camera

Area of Science:

• Optics and Photonics
• Metamaterials
• Polarization Optics

Background:

• Spatially varying polarization elements are a recent advancement in optics.
• Traditional polarization analysis often requires bulky optical components and multiple measurements.

Purpose of the Study:

• To introduce matrix Fourier optics for analyzing devices with spatially varying polarization.
• To design and demonstrate metasurface gratings for arbitrary, parallel polarization analysis.
• To enable a compact, single-shot full-Stokes polarization camera.

Main Methods:

• Extension of Fourier optics to matrix Fourier optics.
• Design and fabrication of metasurface gratings.
• Integration of gratings into a single-shot camera system.

Main Results:

• Demonstration of metasurface gratings capable of parallel polarization analysis.
• Realization of a compact camera achieving full-Stokes polarization measurement.
• Elimination of the need for moving parts, patterned pixels, or conventional polarization optics.

Conclusions:

• Matrix Fourier optics provides a framework for understanding advanced polarization elements.
• Metasurface gratings offer a novel approach for compact polarization imaging.
• The developed single-shot polarization camera has potential applications in machine vision and remote sensing.