Journal
OPTICS LETTERS
Volume 37, Issue 5, Pages 869-871Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.37.000869
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Funding
- Ministry of Science and Innovation, Government of Spain [FIS2009-09928, FIS2008-00114]
- Australian Research Council [DP110103697]
- Fundacio Cellex Barcelona
- ICREA Funding Source: Custom
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We study the spiral spectra scattered off transparent dielectric spheres when probed by different Laguerre-Gaussian light beams, carrying nested topological wavefront dislocations. We show that such scattering data may be employed to determine geometrical properties of the spheres, such as their position. The technique is a generalization of standard Mie scattering, and it can be extended to study and to characterize nanospheres. (C) 2012 Optical Society of America
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