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Proceedings Paper

Demonstration of multi-dimensional optical binding in counter-propagating laser beams with variable beam properties
Author(s): Oto Brzobohaty; Vítezslav Karásek; Tomáš Čižmár; Pavel Zemánek
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Paper Abstract

We report on dynamic modifications of the size of micro-structures self-arranged in counter-propagating laser beams by means of beams width changing. In contrast to previous published results, where the optically bound structures were kept stationary without dynamic control, here we present a method that allows dynamic modification of the self-arranged structure employing shrinking or enlargement of the "optical cage" where the particles are kept. We show the full potential of this method and demonstrate tunable optical self-arrangement of particles in one-dimension using a pair of counter-propagating Bessel beams or Gaussian beams, in two-dimensions far from the surface using a pair of counter-propagating elliptical Gaussian beams, in three-dimensions using three pairs of counter-propagating Gaussian beams arranged in space. Moreover, we present the first demonstration of optically bound revolving structure size of which can be tuned in a pair of counter-propagating Laguerre-Gaussian beams.

Paper Details

Date Published: 9 September 2011
PDF: 8 pages
Proc. SPIE 8097, Optical Trapping and Optical Micromanipulation VIII, 80970U (9 September 2011); doi: 10.1117/12.893624
Show Author Affiliations
Oto Brzobohaty, Institute of Scientific Instruments of the ASCR, v.v.i. (Czech Republic)
Vítezslav Karásek, Institute of Scientific Instruments of the ASCR, v.v.i. (Czech Republic)
Tomáš Čižmár, Univ. of St Andrews (United States)
Pavel Zemánek, Institute of Scientific Instruments of the ASCR, v.v.i. (Czech Republic)


Published in SPIE Proceedings Vol. 8097:
Optical Trapping and Optical Micromanipulation VIII
Kishan Dholakia; Gabriel C. Spalding, Editor(s)

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