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17 July 2013 Polarization signatures of airborne particulates
Prashant Raman, Kirk A. Fuller, Don A. Gregory
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Optical Engineering, Vol. 52, Issue 7, 074106 (July 2013). https://doi.org/10.1117/1.OE.52.7.074106
Abstract
Exploratory research has been conducted with the aim of completely determining the polarization signatures of selected particulates as a function of wavelength. This may lead to a better understanding of the interaction between electromagnetic radiation and such materials, perhaps leading to the point detection of bio-aerosols present in the atmosphere. To this end, a polarimeter capable of measuring the complete Mueller matrix of highly scattering samples in transmission and reflection (with good spectral resolution from 300 to 1100 nm) has been developed. The polarization properties of Bacillus subtilis (surrogate for anthrax spore) are compared to ambient particulate matter species such as pollen, dust, and soot. Differentiating features in the polarization signatures of these samples have been identified, thus demonstrating the potential applicability of this technique for the detection of bio-aerosol in the ambient atmosphere.
CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.
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Prashant Raman, Kirk A. Fuller, and Don A. Gregory "Polarization signatures of airborne particulates," Optical Engineering 52(7), 074106 (17 July 2013). https://doi.org/10.1117/1.OE.52.7.074106
Published: 17 July 2013
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Cited by 5 scholarly publications.
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KEYWORDS
Polarization
Phase modulation
Polarimetry
Scattering
Aerosols
Atmospheric particles
Atmospheric sensing
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