The role of the angular momentum of light in Mie scattering. Excitation   of dielectric spheres with Laguerre-Gaussian modes
  We present a method to enhance the ripple structure of the scattered electromagnetic field in the visible range through the use of Laguerre-Gaussian beams. The position of these enhanced ripples as well as their linewidths can be controlled using different optical beams and sizes of the spheres. 
Xavier Zambrana-Puyalto and Gabriel Molina-Terriza
physics.optics