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Tuesday, July 27, 2010

Observation of optical guiding using thermal light

Carlos López-Mariscal and Julio C Gutiérrez-Vega

We report the use of light from a thermal source for optical guiding of microscopic particles. We demonstrate successful guiding of dielectric spheres using light from a high-pressure gas lamp shaped into an ad hocBessel wavefield with an enhanced transverse optical gradient and long focal depth. The broadband light source is spectrally characterized and potential applications of our observations are outlined.

DOI

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