Enhanced particle guiding using supercontinuum radiation

Pascal Fischer; Antonia E. Carruthers; Karen Volke-Sepulveda; Ewan M. Wright; Helen Little; Christian T.A. Brown; Wilson Sibbett; Kishan Dholakia

doi:10.1117/12.678080

Enhanced particle guiding using supercontinuum radiation

Pascal Fischer, Antonia E. Carruthers, Karen Volke-Sepulveda, Ewan M. Wright, Helen Little, Christian T.A. Brown, Wilson Sibbett, Kishan Dholakia

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Scopus citations

Abstract

We demonstrate the use of supercontinuum radiation to provide enhanced guiding distances of microscopic particles compared to the standard continuous wave or femtosecond lasers. Our technique relies on the chromatic aberration of the lens used to form an elongated focal region within which guiding takes place. The resulting beam profile has been modelled and shows that for a Gaussian input beam, the intensity profile after the lens can be considered as a sum of Gaussians, one for each wavelength but with varying focal position due to dispersion. Our experimental investigations compare radiation from continuous wave (bandwidth < 1nm) and femtosecond pulsed (bandwidth > 100nm) lasers as well as supercontinuum radiation (bandwidth > 450nm) and show good agreement with theory.

Original language	English (US)
Title of host publication	Optical Trapping and Optical Micromanipulation III
DOIs	https://doi.org/10.1117/12.678080
State	Published - 2006
Event	Optical Trapping and Optical Micromanipulation III - San Diego, CA, United States Duration: Aug 13 2006 → Aug 17 2006

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	6326
ISSN (Print)	0277-786X

Other

Other	Optical Trapping and Optical Micromanipulation III
Country/Territory	United States
City	San Diego, CA
Period	8/13/06 → 8/17/06

Keywords

Bandwidth dependent light properties
Chromatic aberration
Particle guiding

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.678080

Cite this

Fischer, P., Carruthers, A. E., Volke-Sepulveda, K., Wright, E. M., Little, H., Brown, C. T. A., Sibbett, W., & Dholakia, K. (2006). Enhanced particle guiding using supercontinuum radiation. In Optical Trapping and Optical Micromanipulation III Article 63261G (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 6326). https://doi.org/10.1117/12.678080

Enhanced particle guiding using supercontinuum radiation. / Fischer, Pascal; Carruthers, Antonia E.; Volke-Sepulveda, Karen et al.
Optical Trapping and Optical Micromanipulation III. 2006. 63261G (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 6326).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Fischer, P, Carruthers, AE, Volke-Sepulveda, K, Wright, EM, Little, H, Brown, CTA, Sibbett, W & Dholakia, K 2006, Enhanced particle guiding using supercontinuum radiation. in Optical Trapping and Optical Micromanipulation III., 63261G, Proceedings of SPIE - The International Society for Optical Engineering, vol. 6326, Optical Trapping and Optical Micromanipulation III, San Diego, CA, United States, 8/13/06. https://doi.org/10.1117/12.678080

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AU - Brown, Christian T.A.

AU - Sibbett, Wilson

AU - Dholakia, Kishan

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AB - We demonstrate the use of supercontinuum radiation to provide enhanced guiding distances of microscopic particles compared to the standard continuous wave or femtosecond lasers. Our technique relies on the chromatic aberration of the lens used to form an elongated focal region within which guiding takes place. The resulting beam profile has been modelled and shows that for a Gaussian input beam, the intensity profile after the lens can be considered as a sum of Gaussians, one for each wavelength but with varying focal position due to dispersion. Our experimental investigations compare radiation from continuous wave (bandwidth < 1nm) and femtosecond pulsed (bandwidth > 100nm) lasers as well as supercontinuum radiation (bandwidth > 450nm) and show good agreement with theory.

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Enhanced particle guiding using supercontinuum radiation

Abstract

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