Enhanced optical guiding of colloidal particles using a supercontinuum light source

P Fischer; A E Carruthers; K Volke-Sepulveda; E M Wright; Christian Thomas Alcuin Brown; Wilson Sibbett; Kishan 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, Christian Thomas Alcuin Brown, Wilson Sibbett, Kishan Dholakia

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

21 Citations (Scopus)

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. (c) 2006 Optical Society of America.

Original language	English
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
Publication status	Published - 12 Jun 2006

Keywords

BEAMS
MANIPULATION
SEPARATION
FORCE

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10.1364/OE.14.005792

Cite this

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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. (c) 2006 Optical Society of America.",

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note = "A key applications demonstration for supercontinuum radiation in a highly simple format. CTAB provided the main insights for polychromatic guising and has led the collaboration between 2 research groups (Sibbett and Dholakia)",

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AU - Fischer, P

AU - Carruthers, A E

AU - Volke-Sepulveda, K

AU - Wright, E M

AU - Brown, Christian Thomas Alcuin

AU - Sibbett, Wilson

AU - Dholakia, Kishan

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PY - 2006/6/12

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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. (c) 2006 Optical Society of America.

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. (c) 2006 Optical Society of America.

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KW - MANIPULATION

KW - SEPARATION

KW - FORCE

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Enhanced optical guiding of colloidal particles using a supercontinuum light source

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Keywords

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EP/D059828/1 White light non-diffracting: White light non-diffracting beams and applications

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Enhanced optical guiding of colloidal particles using a supercontinuum light source

Abstract

Keywords

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EP/D059828/1 White light non-diffracting: White light non-diffracting beams and applications

Cite this