title: Rigorous model of the scattering of a focused spot by a grating and its application in optical recording.
abstract: We describe a rigorous model for the scattering of a three-dimensional focused spot by a one-dimensional periodic grating. The incident field is decomposed into a sum of quasi-periodic fields, and the scattering of each of these is computed inside one unit cell of the grating. The model is applied to the simulation of the readout of a DVD disk. The polarization dependence of the reflected near and far fields is studied, and, for a TM-polarized incident spot, plasmons are observed in the reflected far-field intensity.
authors.affiliation: Philips Research Laboratory, Professor Holstlaan 4, 5656 AA Eindhoven, The Netherlands.
authors.forename: J M
authors.initials: JM
authors.lastname: Brok
authors.forename: H P
authors.initials: HP
authors.lastname: Urbach