Generation of aerosol-particle light-scattering patterns from digital holograms

• DOI: 10.1364/ol.44.000819
• Publication Date: 2019-12-18T14:53:14Z
• Authors: Ramesh Giri; Claudia Morello; Yuli W. Heinson; Osku Kemppinen; Gorden Videen; Matthew J. Berg
• Keywords: Particle (ecology); Similarity (geometry); Digital holography

The similarity between the light-scattering pattern of a particle in near-forward direction and diffraction from particle's silhouette is investigated. Images irregularly shaped free-flowing aerosol particles are obtained digital hologram measurements, which then binarized to yield silhouette. Application Huygens's principle generates an approximate scattering pattern, when compared true measured shows good agreement for much larger than wavelength light.