Journal
OPTICS AND LASER TECHNOLOGY
Volume 60, Issue -, Pages 99-106Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.optlastec.2014.01.012
Keywords
4pi-tight focusing; 3D shaping; Vortex phase
Categories
Funding
- Russian Foundation for Basic Research [13-07-00266]
- Ministry of education and science of the Russian Federation
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We consider the shaping of spherical intensity distributions based on the interference of counter-propagating tightly focused vortex beams with different polarizations. The formation of 3D distributions is performed using a simple method of optimization of the width and position of the single annular aperture. The optimum parameters for the narrow aperture are calculated analytically. In addition the wide aperture parameters are numerically adjusted. It is shown that depending on the polarization, the additional vortex phase and/or phase shift in the beams allow to form either solid light balls or light spheres of subwavelength radius. They consist of the various electric field components. (C) 2014 Elsevier Ltd. All rights reserved.
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