Optical trapping and spectral analysis of aerosols with a supercontiuum laser source

Opt Express. 2008 May 26;16(11):7655-64. doi: 10.1364/oe.16.007655.

Abstract

We report on the optical trapping of water droplets with a supercontinuum laser source. Droplet size is determined by observing the spectrum of the on-axis backscattered light. In contrast to to monochromatic trapping, the broad spectrum of the supercontinuum covers several resonances of the first excited Mie coefficients. A minimum value of Q approximately 0.16 for the trapping efficiency is estimated.

MeSH terms

  • Aerosols / isolation & purification*
  • Computer Simulation
  • Computer-Aided Design*
  • Environmental Monitoring / instrumentation*
  • Equipment Design
  • Equipment Failure Analysis
  • Models, Theoretical*
  • Optical Tweezers*
  • Spectrum Analysis / instrumentation*
  • Water / analysis*

Substances

  • Aerosols
  • Water