We show that the far fields generated by a source inside or near a microparticle can be obtained readily by using the reciprocity theorem along with the internal or near fields generated by plane-wave illumination. This method is useful for solving problems for which the scattered fields generated with plane-wave illumination have already been obtained. We illustrate the method for the case of a homogeneous sphere and then apply it to the problem of emission from a dipole inside a sphere that is near a plane interface.
© 1997 Optical Society of America
Steven C. Hill, Gorden Videen, and J. David Pendleton, "Reciprocity method for obtaining the far fields generated by a source inside or near a microparticle," J. Opt. Soc. Am. B 14, 2522-2529 (1997)