Aerosol tweezing with a super-continuum laser beam

Marc Guillon, Kishan Dholakia, David McGloin

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    Aerosol tweezing with a super-continuum laser source has been successfully demonstrated. Salt-water droplets in the range between 3 and 7 microns in diameters are trapped with a 300nm-wide super-continuum spectrum. As the spectrum covers a few Mie resonances, the optical force is averaged and the trapping efficiency varies smoothly with the square of the radius a in the case of the ray optics approximation. On-axis elastically back scattered spectrum allows a direct and precise determination of the trapped droplet. Evaporation of a single droplet is precisely followed using this method. Alternative spectroscopic droplet sizing techniques are proposed and discussed.

    Original languageEnglish
    Title of host publicationOptical Trapping and Optical Micromanipulation V
    EditorsKishan Dholakia, Gabriel C. Spalding
    Place of PublicationBellingham
    PublisherSPIE-International Society for Optical Engineering
    Number of pages9
    ISBN (Print)9780819472588
    DOIs
    Publication statusPublished - 2008
    EventSPIE Optics+Photonics 2008: Optical Trapping and Optical Micromanipulation V - San Diego Convention Center, San Diego, United States
    Duration: 10 Aug 200813 Aug 2008
    http://spie.org/x27421.xml

    Publication series

    NameProceedings of SPIE
    PublisherSPIE
    Volume7038

    Conference

    ConferenceSPIE Optics+Photonics 2008: Optical Trapping and Optical Micromanipulation V
    Abbreviated titlehttp://spie.org/x27421.xml
    CountryUnited States
    CitySan Diego
    Period10/08/0813/08/08
    Internet address

    Keywords

    • Optical tweezers
    • aerosols
    • supercontinuum laser
    • spectroscopy

    Cite this

    Guillon, M., Dholakia, K., & McGloin, D. (2008). Aerosol tweezing with a super-continuum laser beam. In K. Dholakia, & G. C. Spalding (Eds.), Optical Trapping and Optical Micromanipulation V [70381Q] (Proceedings of SPIE; Vol. 7038). SPIE-International Society for Optical Engineering. https://doi.org/10.1117/12.793726