Shaped beam scattering by a spheroidal object

• An exact semi-analytical solution is presented in a spheroidal coordinate system.
• This solution is applicable to the case of an arbitrarily shaped beam.
• Numerical results for a Gaussian beam and a zero-order Bessel beam are provided.

A theoretical procedure is developed for the calculation of the electromagnetic fields scattered by a spheroidal object with arbitrary monochromatic illumination. The suggested solution utilizes the method of moments technique in a spheroidal coordinate system. For oblique incidence of a Gaussian beam and zero-order Bessel beam, numerical results of the normalized differential scattering cross section are presented, and the scattering characteristics are analyzed concisely.