Fig. 1
The 1D PC enhances the spin-to-orbital angular momentum conversion of the scattered light from a single particle. a Schematic of the spin-to-orbit angular momentum conversion for scattered light from a single particle under illumination by a circularly polarized beam. This particle can be placed on a glass or 1D PC substrate. The inset shows the structure of the 1D PC. Calculated far-field angular-dependent intensity distributions (BFP image) of the total scattered light (Escat-Total) from a single particle when the particle was placed on a glass (b) or 1D PC substrate (d), and the wavelength of the incident light was 635 nm. Calculated far-field angular-dependent intensity distributions (BFP image) of the RCP-scattered light (Escat-RCP) for the particle on the glass (c) or 1D PC substrate (e). f Calculated angular-dependent transmittance through the glass and 1D PC substrate, where θ is the incidence angle with respect to the direction normal to the substrate. NA = n*sin θ, where n is the refractive index
