Aerosol tweezing with a super-continuum laser beam

Marc Guillon, Kishan Dholakia, David McGloin

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


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 as 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
Publication statusPublished - 2008
EventOptical Trapping and Optical Micromanipulation V - San Diego, CA, United States
Duration: 2008 Aug 102008 Aug 13

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


ConferenceOptical Trapping and Optical Micromanipulation V
Country/TerritoryUnited States
CitySan Diego, CA

All Science Journal Classification (ASJC) codes

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


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