Measuring extinction with digital holography: nonspherical particles and experimental validation | Zendy

Matthew J. Berg | Zendy; Nava R. Subedi | Zendy; Peter Anderson | Zendy

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Measuring extinction with digital holography: nonspherical particles and experimental validation

Author(s) -

Matthew J. Berg,

Nava R. Subedi,

Peter Anderson

Publication year - 2017

Publication title -

optics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.524

H-Index - 272

eISSN - 1071-2763

pISSN - 0146-9592

DOI - 10.1364/ol.42.001011

Subject(s) - optics , holography , extinction (optical mineralogy) , cross section (physics) , physics , range (aeronautics) , absorption (acoustics) , digital holography , magnitude (astronomy) , materials science , astrophysics , quantum mechanics , composite material

Through simulations and experiment, this Letter shows how a particle's extinction cross section can be extracted from a digital hologram. Spherical and nonspherical particles are considered covering a range of cross-sectional values of nearly five orders of magnitude. The extracted cross sections are typically less than 10% in error from the true values. It is also shown that holograms encompassing a sufficiently large angular range of scattered light yield an estimate for the absorption cross section.

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