摘要
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.
原文 | 英語 |
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頁(從 - 到) | 191-197 |
頁數 | 7 |
期刊 | Optics Express |
卷 | 2 |
發行號 | 5 |
DOIs | |
出版狀態 | 已發佈 - 1998 3月 |
對外發佈 | 是 |
ASJC Scopus subject areas
- 原子與分子物理與光學