Calculation of light scattering from particles and structures on a surface by the coupled-dipole method

Light scattering from particles or structures on a surface is calculated by using a modification of the coupleddipolemethod. The interaction matrix is modified for the presence of the surface by inclusion of the dipolereflection terms, calculated with the Sommerfeld integral formulation. The incident plane wave is replaced by the incident plus the surface reflected waves. In some cases the dipole reflections may be approximated by aFresnel image dipole. Light scattering for structures up to a wavelength in size can be alculated in a reasonableamount of time. © 1993 Optical Society of America.