Analysis of Resonant Excitation Multipolar Optical Modes in Dielectric Nanosphere and Enhanced Scattered Radiation at Second Harmonic

Abstract

We have analysed the resonant excitation multipolar optical modes in the dielectric nanosphere and enhanced scattered radiation at second harmonic. The study was made using Laguerrl-Gaussian beams process. Scattering of circularly polarized Laguerre-Gaussian beams from single plasmonic and dielectric nanospheres study was made. Rotational symmetry of scatterer was analysed. Nanotechnology was used for the study of second harmonic generation from plasmonic and dielectric nanoparticles. It was found that plasmonic nanostructures supported localized surface plasmon polaritons for optical devices. It was found that rotational symmetries affected the transfer of optical momentum from incident beams in the case of scattered and second harmonic fields. It was also found that dielectric nanostructures produced low intrinsic loss and high power threshold. High frequency conversion efficiency was found due to nanostructures of dielectric. Resonances were found in the spectral regions where intrinsic optical losses were not available. Larger nanosphere favored the production of excitation and appearance of resonances.