Polarization state persistence characteristics in wet haze within PM2.5 for forward transmission

Xiangwei Zeng; Jinkui Chu; Qinming Wu; Yahong Li

doi:10.1117/12.2543495

12 March 2020 Polarization state persistence characteristics in wet haze within PM2.5 for forward transmission

Xiangwei Zeng, Jinkui Chu, Qinming Wu, Yahong Li

Author Affiliations +

Proceedings Volume 11435, 2019 International Conference on Optical Instruments and Technology: Optical Communication and Optical Signal Processing; 1143509 (2020) https://doi.org/10.1117/12.2543495
Event: 2019 International Conference on Optical Instruments and Technology, 2019, Beijing, China

Abstract

This study evaluates the polarization state persistence of differently polarized light as they propagate through wet haze (PM2.5), in forward transmission. The investigated wavelength range extends from ultraviolet (UV) to short-wave infrared (SWIR) light. Using a polarization tracking Monte Carlo simulation for a range of particle sizes, wavelengths, relative refractive indices, and propagation distances, we find that both vertically-linearly- and right-handed-circularly-polarized light show superior polarization state persistence at a wavelength of 2.4μm. While the persistence increases gradually for increasing wavelengths, the study also reveals an anomaly, a persistence peak for wet haze with 2μm particles and 0.36μm wavelength. We further compare the polarization state persistence characteristics of vertically linearly and right circularly polarized light. Circular polarization persists better than linear for wet haze in wavelengths of 0.36, 0.543, and 1μm. While with the increase of wavelength and the decrease of particle size, linear polarization gradually persisted better than circular polarization.

Citation Download Citation

Xiangwei Zeng, Jinkui Chu, Qinming Wu, and Yahong Li "Polarization state persistence characteristics in wet haze within PM2.5 for forward transmission", Proc. SPIE 11435, 2019 International Conference on Optical Instruments and Technology: Optical Communication and Optical Signal Processing, 1143509 (12 March 2020); https://doi.org/10.1117/12.2543495

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