Sorting of polystyrene microspheres using a Y-branched optical waveguide

Sorting of polystyrene microspheres using a Y-branched optical waveguide

We demonstrate how a Y-branched optical waveguide can be used for microparticle sorting. Polystyrene microparticles, optically guided in the waveguide's evanescent field, are directed down the desired, more strongly illuminated, output branch. The output of a fibre laser at a wavelength of 1066...

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Bibliographic Details
Published in:Optics express Vol. 13; no. 1; pp. 1 - 7
Main Authors: Grujic, K, Hellesø, O, Hole, J, Wilkinson, J
Format: Journal Article
Language:English
Published: United States Optical Society of America 10-01-2005
Subjects:
Nanotechnology: 630
Nanoteknologi: 630
Technology: 500
Teknologi: 500
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Summary:We demonstrate how a Y-branched optical waveguide can be used for microparticle sorting. Polystyrene microparticles, optically guided in the waveguide's evanescent field, are directed down the desired, more strongly illuminated, output branch. The output of a fibre laser at a wavelength of 1066 nm is coupled to the waveguide by direct butting. The power distribution between the two output branches is selected by the relative position of the fibre to the waveguide input facet. This provides a simple method for reliable particle sorting with very high probability of success under appropriate conditions. The method can be easily combined with other particle manipulation techniques of interest for micro total analysis systems of the future.
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ISSN:1094-4087
1094-4087
DOI:10.1364/opex.13.000001