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)

Abstract

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
Volume2
Issue number5
DOIs
Publication statusPublished - 1998 Jan 1

Fingerprint

optical disks
near fields
profiles
diffraction
far fields
electromagnetic fields
diffraction patterns
illumination
scalars
polarization

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Vector diffraction from subwavelength optical disk structures : Two-dimensional near-field profiles. / Liu, Wei-Chih; Kowarz, Marek W.

In: Optics Express, Vol. 2, No. 5, 01.01.1998, p. 191-197.

Research output: Contribution to journalArticle

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