Spectral shift of a light wave on scattering from an ellipsoidal particle with arbitrary orientation

Within the accuracy of the first-order Born approximation, a general expression for the far-zone spectrum of a light wave on scattering from an arbitrarily orientated ellipsoidal particle is derived. We show that the spectrum of the scattered field, in general, changes with the scattering azimuthal angle, displaying rotational nonsymmetry. The influence of the orientation of the particle on the spectrum of the scattered field is discussed, and the relationship between the orientation of scattering particle and the distribution of the relative spectral shift of the scattered field is investigated.