Paper Info
Title
Full-Stokes Retrieving and Configuration Optimization in a Time-Integration Imaging Polarimeter
Abstract
A time-integration imaging polarimeter with continuous rotating retarder is presented, and its full-Stokes retrieving and configuration optimization are also demonstrated. The mathematical expression between the full-Stokes vector and the time-integration light intensities is derived. As a result, the state of polarization of incident light can be retrieved by only one matrix calculation. However, the modulation matrix deviates from the initial well-conditioned status due to time integration. Thus, we re-optimize the nominal angles for the special retardance of 132 degrees and 90 degrees with an exposure angle of 30 degrees, which results in a reduction of 31.8% and 16.8% of condition numbers comparing to the original configuration, respectively. We also give global optimization results under different exposure angles and retardance of retarder; as a result, the 137.7 degrees of retardance achieves a minimal condition number of 2.0, which indicates a well-conditioned polarimeter configuration. Besides, the frame-by-frame algorithm ensures the dynamic performance of the presented polarimeter. For a general brushless DC motor with a rotating speed of over 2000 rounds per minute, the speed of polarization imaging will achieve up to 270 frames per second. High precision and excellent dynamic performance, together with features of compactness, simplicity, and low cost, may give this traditional imaging polarimeter new life and attractive prospects.
Year
DOI
Venue
2022
10.3390/s22134733
SENSORS
Keywords
DocType
Volume
imaging polarimeter, full-Stokes vector retrieving, time integration, configuration optimization
Journal
22
Issue
ISSN
Citations 
13
1424-8220
0
PageRank 
References 
Authors
0.34
0
4
Name
Order
Citations
PageRank
Naiting Gu100.34
Bowen Lian200.34
Yawei Xiao300.34
Linhai Huang400.34