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arXiv · 0910.5642

Diffraction-free beams in thin films

Carlos J. Zapata-Rodriguez
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Abstract

The propagation and transmission of Bessel beams through nano-layered structures has been discussed recently. Within this framework we recognize the formation of unguided diffraction-free waves with the spot size approaching and occasionally surpassing the limit of a wavelength when a Bessel beam of any order n is launched onto a thin material slab with grazing incidence. Based on the plane-wave representation of cylindrical waves, a simple model is introduced providing an exact prescription of the transverse pattern of this type of diffraction-suppressed localized waves. Potential applications in surface science are put forward for consideration.

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Carlos J. Zapata-Rodriguez. 2009-10-29. Diffraction-free beams in thin films. https://doi.org/10.1364/josaa.27.000663

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