Two-dimensional angular optical scattering for the characterization of airborne microparticles

Two-dimensional angular optical scattering (TAOS) is recorded for several particle shapes and configurations. A lens is used to collect a large solid angle of the light and transform the angular profile into a planar distribution according to the Abbé sine condition. Qualitative agreement is found b...

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Bibliographic Details
Published in:Optics letters 1998-09, Vol.23 (18), p.1489-1491
Main Authors: Holler, S, Pan, Y, Chang, R K, Bottiger, J R, Hill, S C, Hillis, D B
Format: Article
Language:English
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Summary:Two-dimensional angular optical scattering (TAOS) is recorded for several particle shapes and configurations. A lens is used to collect a large solid angle of the light and transform the angular profile into a planar distribution according to the Abbé sine condition. Qualitative agreement is found between experiment and theory for the TAOS from spheroids having the same aspect ratio but different sizes. A distinctive irregular island structure is observed in the TAOS from clusters of Bacillus subtilis spores and polystyrene latex spheres. The density per solid angle of these islands is found to increase with cluster diameter.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.23.001489