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; K. Dholakia

doi:10.1364/OE.14.005792

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, K. Dholakia

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

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.

Original language	English (US)
Pages (from-to)	5792-5802
Number of pages	11
Journal	Optics Express
Volume	14
Issue number	12
DOIs	https://doi.org/10.1364/OE.14.005792
State	Published - 2006

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1364/OE.14.005792

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title = "Enhanced optical guiding of colloidal particles using a supercontinuum light source",

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.",

author = "P. Fischer and Carruthers, {A. E.} and K. Volke-Sepulveda and Wright, {E. M.} and Brown, {C. T.A.} and W. Sibbett and K. Dholakia",

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AU - Fischer, P.

AU - Carruthers, A. E.

AU - Volke-Sepulveda, K.

AU - Wright, E. M.

AU - Brown, C. T.A.

AU - Sibbett, W.

AU - Dholakia, K.

PY - 2006

Y1 - 2006

N2 - 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.

AB - 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.

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Enhanced optical guiding of colloidal particles using a supercontinuum light source

Abstract

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