Laboratory measurements and T-matrix calculations of the scattering matrix of rutile particles in water

Appl Opt. 1999 Aug 20;38(24):5232-40. doi: 10.1364/ao.38.005232.

Abstract

We present experimentally determined scattering matrix elements of birefringent rutile particles in water as a function of the scattering angle for a wavelength of 633 nm (in air). These elements are compared with the results of T-matrix calculations for prolate spheroids. For the diagonal matrix elements the results of the T-matrix calculations are in good agreement with those of the measurements. A good fit for the whole matrix, including the off-diagonal elements, is obtained when we compensate for the birefringence of the rutile particles by performing the computations for spheroids with a slightly larger length/width ratio than measured.