Size and shape determination of spheroidal scatterers using two-dimensional angle resolved scattering.
We demonstrate accurate determination of the size and shape of spherical and spheroidal scatterers through inverse analysis of two-dimensional solid-angle and depth resolved backscattered light intensities. Intensity of scattered light is measured over a wide range of solid angles using a novel scanning fiber optic interferometer from both individual and ensembles of scatterers. T-matrix based inverse analysis of these two-dimensional angular measurements yields completely unique size and aspect ratio determinations with subwavelength precision over a large range of possible scatterer geometries.
Giacomelli
Michael
M
Dept. of Biomedical Engineering and Fitzpatrick Center for Photonics, Duke University, Durham, NC 27708, USA.
Zhu
Yizheng
Y
Lee
John
J
Wax
Adam
A
D003198:Computer Simulation; D005336:Fiber Optic Technology; D007368:Interferometry / Q000379:methods*; D008863:Microspheres; D009862:Online Systems; D012542:Scattering, Radiation