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Proceedings Paper

Generation of coherence vortex networks from systems of several Mie-scattering particles
Author(s): Madara L. Marasinghe; Malin Premaratne; David M. Paganin
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Paper Abstract

We have previously demonstrated that Mie scattered statistically stationary partially coherent electromagnetic fields result in spontaneous creation and nucleation of coherence vortices in the field both inside and outside the scattering particle. In a succeeding study we showed that a regular lattice of coherence vortices can be generated by illuminating a system of three scatterers with partially coherent light. In this paper, we analyze the field scattered by differently arranged systems of scatterers and investigate the coherence variation of the scattered field. We show that different patterns of coherence vortex networks can be realized depending on the spatial arrangement of the scatterers. Different patterns of vortex networks generated in these scattering systems make them suitable candidates for particle manipulation applications at microscopic levels.

Paper Details

Date Published: 10 October 2012
PDF: 12 pages
Proc. SPIE 8458, Optical Trapping and Optical Micromanipulation IX, 845832 (10 October 2012); doi: 10.1117/12.930253
Show Author Affiliations
Madara L. Marasinghe, Monash Univ. (Australia)
Malin Premaratne, Monash Univ. (Australia)
David M. Paganin, Monash Univ. (Australia)

Published in SPIE Proceedings Vol. 8458:
Optical Trapping and Optical Micromanipulation IX
Kishan Dholakia; Gabriel C. Spalding, Editor(s)

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