Abstract
Sub-wavelength spots are widely applied in the field of near-field optics. This technology allows the increase of optical resolutions up to two order of magnitudes beyond the Rayleigh limit. In all cases however, the initial fields generated are of spot-type profile, and as such, they suffer from rapid and large profile changes, as one departs from the initial aperture where they are generated. A new kind of solution of the optical field, the evanescent Bessel beam, is presented. These beams are shown to be able to retain a sub-wavelength size lobe for distances much larger than those of spot-type profiles.
| Original language | English |
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| Pages (from-to) | 412-414 |
| Number of pages | 3 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 3864 |
| Issue number | SUPPL. |
| State | Published - 1999 |
| Event | Proceedings of the 1999 Joint International Symposium on Optical Memory and Optical Optical Data Storage (ISOM/ODS'99) - Koloa, HI, USA Duration: 12 Jul 1999 → 15 Jul 1999 |