Disordered metasurface enabled single-shot full-Stokes polarization imaging leveraging weak dichroism.

Area of Science:

• Optics and Photonics
• Metasurface Technology
• Computational Imaging

Background:

• Polarization imaging captures scene information beyond intensity, crucial for applications limited by traditional cameras.
• Current polarization imaging methods often use highly dichroic elements (PER >~100), limiting light transmission, bandwidth, and circular polarization detection.

Purpose of the Study:

• To develop a single-shot full-Stokes polarization camera with improved efficiency and broader functionality.
• To demonstrate the efficacy of disordered metasurfaces combined with compressed sensing for polarization imaging.

Main Methods:

• Incorporation of a disordered metasurface array with weak dichroism (diattenuation ~65%, PER ~2) into a single-shot camera.
• Application of compressed sensing principles, utilizing the metasurface array as an efficient sensing matrix.
• Development and implementation of a mask-aware reconstruction algorithm for accurate signal recovery.

Main Results:

• Achieved high-accuracy full-Stokes polarimetry.
• Demonstrated high-resolution, real-time polarization imaging capabilities.
• Validated the effectiveness of the disordered metasurface and reconstruction algorithm approach.

Conclusions:

• The proposed disordered metasurface-based polarization camera offers a promising alternative to conventional methods.
• Combining meta-optics with advanced reconstruction algorithms opens new avenues for sophisticated imaging applications.
• This technology enhances efficiency and expands the scope of polarization imaging.