title: Light scattering by irregular particles much larger than the wavelength with wavelength-scale surface roughness.
abstract: We simulate light scattering by random irregular particles that have dimensions much larger than the wavelength of incident light at the size parameter of X=200 using the discontinuous Galerkin time domain method. A comparison of the DGTD solution for smoothly faceted particles with that obtained with a geometric optics model shows good agreement for the scattering angle curves of intensity and polarization. If a wavelength-scale surface roughness is introduced, diffuse scattering at rough interface results in smooth and featureless curves for all scattering matrix elements which is consistent with the laboratory measurements of real samples.
authors.forename: Yevgen
authors.initials: Y
authors.lastname: Grynko
authors.forename: Yuriy
authors.initials: Y
authors.lastname: Shkuratov
authors.forename: Jens
authors.initials: J
authors.lastname: Förstner