Work

Integrated Polarimetric Spectral Imaging Sensor Combining Spectral Imaging and Polarization Modulation Techniques

Year: 2025

Type: article

Abstract: Polarimetric spectral imaging systems have unique application advantages in environmental remote sensing, military target recognition, astronomy, medicine, etc., because of their ability to acquire multidimensional information. However, traditional systems are constrained by complex structures and low spectral resolution, making them unlikely to achieve their full potential. This study proposes a novel polarimetric spectral imaging method for information acquisition to address these shortcomings. The method integrates a polarization modulator (composed of two retarders and one polarizer) into the incident optical path of a push-broom imaging spectrometer for hardware integration. The modulator statically encodes the full polarization spectral information of the measured light into output power spectra, which the spectrometer records as raw spectral image data. Target polarimetric spectral imaging information is then reconstructed from the raw data to realize sensor functions. The system structure, data reconstruction principles, laboratory experiments with typical polarized light sources, and preliminary outdoor experiments verified the system's correctness and reliability. The results facilitate further expansion of the application scope of polarimetric spectral imaging systems.

Source: Sensors

DOI: 10.3390/s26010144

Authors: Zihao Liu, Zhiping Song, Zhengqiang Li, Li Li

Institutions: Anhui University, Chinese Academy of Sciences, Aerospace Information Research Institute

Language: English

Topic: Optical Polarization and Ellipsometry

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,137

Funders: Anhui University, National Key Research and Development Program of China