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Proceedings Paper

Optical guiding with continuous wave and femtosecond lasers
Author(s): Helen Little; C. T. A. Brown; Veneranda Garces-Chavez; Wilson Sibbett; Kishan Dholakia
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Paper Abstract

Optical guiding of microscopic particles in femtosecond and continuous wave Bessel light beams is studied and compared. We confirm that optical guiding is an average power effect and observe no difference in the guiding velocities of non-fluorescing polymer spheres. Furthermore, we observe second harmonic generation of guided KTP crystallites in femtosecond Bessel light beams. This observation opens up the prospect of using multi-photon effects in optical manipulation for applications such as optical identification of guided cells for sorting purposes.

Paper Details

Date Published: 18 October 2004
PDF: 6 pages
Proc. SPIE 5514, Optical Trapping and Optical Micromanipulation, (18 October 2004); doi: 10.1117/12.560591
Show Author Affiliations
Helen Little, Univ. of St. Andrews (United Kingdom)
C. T. A. Brown, Univ. of St. Andrews (United Kingdom)
Veneranda Garces-Chavez, Univ. of St. Andrews (United Kingdom)
Wilson Sibbett, Univ. of St. Andrews (United Kingdom)
Kishan Dholakia, Univ. of St. Andrews (United Kingdom)

Published in SPIE Proceedings Vol. 5514:
Optical Trapping and Optical Micromanipulation
Kishan Dholakia; Gabriel C. Spalding, Editor(s)

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