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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 1, Iss. 7 — Jul. 17, 2006

Enhanced optical guiding of colloidal particles using a supercontinuum light source

P. Fischer, A. E. Carruthers, K. Volke-Sepulveda, E. M. Wright, C.T.A. Brown, W. Sibbett, and K. Dholakia  »View Author Affiliations


Optics Express, Vol. 14, Issue 12, pp. 5792-5802 (2006)
http://dx.doi.org/10.1364/OE.14.005792


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Abstract

We demonstrate enhanced optical guiding distances for microscopic particles using a supercontinuum light beam. The enhanced spectral bandwidth of the source leads to an elongated focal region. As a result we obtain a significant radial gradient force and axial radiation pressure force over a longer distance when compared to a monochromatic Gaussian beam. The guiding distances of up to 3mm that are observed for micron-sized particles with the supercontinuum beam are approximately twice those observed using continuous wave and femtosecond laser sources when considering beams of equivalent diameter. This guiding scheme is expected to be applicable to colloidal particles, biological cells and cold atom ensembles.

© 2006 Optical Society of America

OCIS Codes
(080.1010) Geometric optics : Aberrations (global)
(140.7010) Lasers and laser optics : Laser trapping
(260.2030) Physical optics : Dispersion

ToC Category:
Trapping

History
Original Manuscript: April 11, 2006
Revised Manuscript: May 30, 2006
Manuscript Accepted: June 1, 2006
Published: June 12, 2006

Virtual Issues
Vol. 1, Iss. 7 Virtual Journal for Biomedical Optics

Citation
P. Fischer, A. E. Carruthers, K. Volke-Sepulveda, E. M. Wright, C. T. A. Brown, W. Sibbett, and K. Dholakia, "Enhanced optical guiding of colloidal particles using a supercontinuum light source," Opt. Express 14, 5792-5802 (2006)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=oe-14-12-5792


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