Abstract
We present a study on the far-field patterns of light transmitted through sub-wavelength metallic hole-arrays. Spectral imaging measurements are used here on hole arrays for the first time. It provides both spatial and spectral information of the transmission in far-field. The visibility of the images, measured in two illumination modes: Köhler and collimated, is calculated for different planes in and out of focus. The transmission under collimated illumination reveals that 75% of the beam if non-divergent. The results are in agreement with the low divergence measured by Lezec [Science 297, 820 (2002)].
Original language | English |
---|---|
Pages (from-to) | 9477-9482 |
Number of pages | 6 |
Journal | Optics Express |
Volume | 14 |
Issue number | 20 |
DOIs | |
State | Published - Oct 2006 |
Bibliographical note
Funding Information:Financial support of the National Cancer Institute of Canada, the Medical Research Council of Canada, and the Ontario Cancer Treatment and Research Foundation is appreciated
Funding
Financial support of the National Cancer Institute of Canada, the Medical Research Council of Canada, and the Ontario Cancer Treatment and Research Foundation is appreciated
Funders | Funder number |
---|---|
National Cancer Institute of Canada | |
Ontario Cancer Treatment and Research Foundation | |
Medical Research Council Canada |