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Optical Engineering • Open Access

Polarization signatures of airborne particulates
Author(s): Prashant Raman; Kirk A. Fuller; Don A. Gregory

Paper 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.

Paper Details

Date Published: 17 July 2013
PDF: 7 pages
Opt. Eng. 52(7) 074106 doi: 10.1117/1.OE.52.7.074106
Published in: Optical Engineering Volume 52, Issue 7
Show Author Affiliations
Prashant Raman, The Univ. of Alabama in Huntsville (United States)
Kirk A. Fuller, The Univ. of Alabama in Huntsville (United States)
Don A. Gregory, The Univ. of Alabama in Huntsville (United States)

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