  We study the light scattering by localized quasi planar excitations of a
Cholesteric Liquid Crystal known as spherulites. Due to the anisotropic optical
properties of the medium and the peculiar shape of the excitations, we
quantitatively evaluate the cross section of the axis-rotation of polarized
light. Because of the complexity of the system under consideration, first we
give a simplified, but analytical, description of the spherulite and we compare
the Born approximation results in this setting with those obtained by resorting
to a numerical exact solution. The effects of changing values of the driving
external static electric (or magnetic) field is considered. Possible
applications of the phenomenon are envisaged.
