Vector diffraction from subwavelength optical disk structures: Two-dimensional near-field profiles

Wei Chih Liu, Marek W. Kowarz

Research output: Contribution to journalArticle

10 Citations (Scopus)


An efficient finite-difference frequency-domain method is developed for calculating electromagnetic fields in the neighborhood of subwavelength dielectric and metallic structures. The method is used to investigate two-dimensional near-field and far-field patterns of a focused beam diffracted from an optical disk, specifically from a DVD (Digital Versatile Disk). It is shown that the polarization of illumination has a significant impact on diffraction patterns as expected and that scalar theory does not provide an accurate-analysis of diffraction from a DVD.

Original languageEnglish
Pages (from-to)191-197
Number of pages7
JournalOptics Express
Issue number5
Publication statusPublished - 1998 Mar


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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