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 language | English |
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| Pages (from-to) | 371-380 |
| Number of pages | 10 |
| Journal | Optics Express |
| Volume | 11 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2003 |