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Chip-integrated metasurface full-Stokes polarimetric imaging sensor.
Jiawei Zuo1,2, Jing Bai1,2, Shinhyuk Choi1,2
1School of Electrical, Computer and Energy Engineering, Arizona State University, 85281, Tempe, AZ, USA.
Light, Science & Applications
|September 6, 2023
Summary
We developed a compact, chip-integrated metasurface sensor for fast, accurate full-Stokes polarimetric imaging. This technology enhances vision for applications like autonomous driving and medical diagnostics.
Area of Science:
- Optics and Photonics
- Materials Science
- Nanotechnology
Background:
- Polarimetric imaging reveals hidden features but requires complex, bulky sensors.
- Existing chip-integrated sensors face material limitations, hindering speed and cost-effectiveness.
Purpose of the Study:
- To present a chip-integrated metasurface-based full-Stokes polarimetric imaging sensor (MetaPolarIm).
- To overcome material limitations for compact, fast, and accurate polarimetric imaging.
Main Methods:
- Integration of an ultrathin metasurface polarization filter array (MPFA) onto a CMOS imaging sensor.
- MPFA utilizes broadband dielectric-metal hybrid chiral metasurfaces and double-layer nanograting polarizers.
- CMOS-compatible fabrication processes ensure manufacturability.
Main Results:
- Demonstration of single-shot full-Stokes polarimetric imaging with a compact form factor.
- Achieved high measurement accuracy and dual-color (green/red) operation.
- Established a field of view up to 40 degrees.
Conclusions:
- The MetaPolarIm sensor offers a significant advancement in polarimetric imaging technology.
- Its compact size, speed, and accuracy enable new possibilities in various fields.
- Potential applications include autonomous vision, industrial inspection, space exploration, and medical diagnostics.
