Generation of coherence vortex networks from systems of several Mie-scattering particles

Madara L. Marasinghe; Malin Premaratne; David M. Paganin

doi:10.1117/12.930253

10 October 2012 Generation of coherence vortex networks from systems of several Mie-scattering particles

Madara L. Marasinghe, Malin Premaratne, David M. Paganin

Proceedings Volume 8458, Optical Trapping and Optical Micromanipulation IX; 845832 (2012) https://doi.org/10.1117/12.930253
Event: SPIE NanoScience + Engineering, 2012, San Diego, California, United States

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.

Citation Download Citation

Madara L. Marasinghe, Malin Premaratne, and David M. Paganin "Generation of coherence vortex networks from systems of several Mie-scattering particles", Proc. SPIE 8458, Optical Trapping and Optical Micromanipulation IX, 845832 (10 October 2012); https://doi.org/10.1117/12.930253

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