title: Size and shape determination of spheroidal scatterers using two-dimensional angle resolved scattering.
abstract: 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.
authors.affiliation: Dept. of Biomedical Engineering and Fitzpatrick Center for Photonics, Duke University, Durham, NC 27708, USA.
authors.forename: Michael
authors.initials: M
authors.lastname: Giacomelli
authors.forename: Yizheng
authors.initials: Y
authors.lastname: Zhu
authors.forename: John
authors.initials: J
authors.lastname: Lee
authors.forename: Adam
authors.initials: A
authors.lastname: Wax
mesh_terms: D003198:Computer Simulation; D005336:Fiber Optic Technology; D007368:Interferometry / Q000379:methods*; D008863:Microspheres; D009862:Online Systems; D012542:Scattering, Radiation