期刊
OPTICS LETTERS
卷 38, 期 6, 页码 905-907出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.38.000905
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资金
- Facultad de Ciencias Fisico-Matematicas [228959]
- CONACYT [127589]
- Danish Council for Independent Research (the FTP project ANAP) [09-072949]
- National Natural Science Foundation of China [61107042]
We demonstrate experimentally generation of diffraction-free plasmonic beams with zeroth- and first-order Bessel intensity profiles using axicon-like structures fabricated on gold film surfaces and designed to operate at a wavelength of 700 nm. The central beam features a very low divergence (similar to 8 pi mrad) for a narrow waist of the order of one wavelength and the ability to self reconstruct, which are the main signatures of diffraction-free beams. (C) 2013 Optical Society of America
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