Characteristics of Laguerre-Gaussian beam scattering from a coated circular nihility cylinder

To study the scattering characteristics of Laguerre-Gaussian (LG) beam from a coated circular nihility cylinder, a theoretical analysis is carried out in this work. A nihility cylinder is coated with metamaterials that may be double positive (DPS) or double negative (DNG), respectively. The electromagnetic field equations are reshaped with the help of LG potential and the usual classical scattering theory. The numerical solution for transverse magnetic (TM) and transverse electric (TE) polarizations are discussed. By implementing the boundary conditions at the interface, the undetermined scattering coefficients are calculated. On employing a special case, the numerical results for the present work were converted into already published literature. Bistatic echo widths have also been calculated and presented numerically. The impact of orbital angular momentum (OAM), i.e., OAM mode number (l) and beam frequency on the bistatic echo width is examined. The OAM index can also be used to control the scattering amplitude.