Multispectral small-angle light scattering from particles

Using a supercontinuum laser, reflective optics, and a spatial filter, we measure two-dimensional small-angle light-scattering patterns for a variety of microparticles including spheres, salt, sand, and volcanic dust. The measurements are done at 13 wavelengths from 450–850 nm, where the absence of...

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Published in:Optics letters 2021-07, Vol.46 (13), p.3155-3158
Main Authors: Ceolato, Romain, Aleau, Killian, Paulien, Lucas, Reynoso-Lara, Edmundo, Berg, Matthew J.
Format: Article
Language:English
Subjects:
Engineering Sciences
Light scattering
Microparticles
Optical components
Physics
Spatial filtering
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description Using a supercontinuum laser, reflective optics, and a spatial filter, we measure two-dimensional small-angle light-scattering patterns for a variety of microparticles including spheres, salt, sand, and volcanic dust. The measurements are done at 13 wavelengths from 450–850 nm, where the absence of refractive optical elements minimizes the effects of chromatic aberration. Qualitative particle-material sensitivity is demonstrated by layering differently colored patterns. Last, the multispectral capability of our device demonstrates a new possibility to probe different q -space regimes for a given particle in a single measurement.
doi_str_mv 10.1364/OL.427580
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subjects Engineering Sciences
Light scattering
Microparticles
Optical components
Physics
Spatial filtering
title Multispectral small-angle light scattering from particles
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