Creation and annihilation of phase singularities near a sub-wavelength slit

H.F. Schouten, T.D. Visser, G. Gbur, D. Lenstra, H. Blok

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

The anomalously-high transmission of light through subwavelength apertures is a phenomenon which has been observed in numerous experiments, but whose theoretical explanation is incomplete. In this article we present a numerical analysis of the power flow (characterized by the Poynting vector)of the electromagnetic field near a sub-wavelength sized slit in a thin metal plate, and demonstrate that the enhanced transmission is accompanied by the annihilation of phase singularities in the power flow near the slit.
Original languageEnglish
Pages (from-to)371-380
Number of pages10
JournalOptics Express
Volume11
Issue number4
DOIs
Publication statusPublished - 2003

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