Generation of high-intensity singular beams
The high-intensity singular beam turns out to be created by means of the ordinary cover glass for a microscope. For this it is necessary to place the edge of the cover glass into the high-power fundam...
Optical vortices in low-mode spun fibers: experimental study
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Particle trapping and transportation by high-intensity singular beams
Proc. SPIE, Vol. 5257, 313 (2003);
doi:10.1117/12.545890
Online Publication Date: 19 December 2003
Conference Title: Ninth International Conference on Nonlinear Optics of Liquid and Photorefractive Crystals
Conference Chairs: Gertruda V. Klimusheva, Andrey G. Iljin, Sergey A. Kostyukevych
Thecombined singular beams generated by saddle-like imperfections of the coverglass surface in IR spectral range is subjected to theunfolding process near the focal plane of a microobjective. Asfar as such beams have their intensity profile similar tothose of the optical vortices with the quaternary topological chargethey can be exploited for the trapping and transportation oflarge micro particles. In contrast to the ordinary high-order opticalvortices being unstable against the slight perturbations of the beam'sshape, the given singular beams conserve their topological structure totrap and carry over the particles up to 200 µmin sizes. This fact is discussed in detail in thegiven work.
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