Real-time measurement of dual-wavelength laser-induced fluorescence spectra of individual aerosol particles

Opt Express. 2008 Oct 13;16(21):16523-8. doi: 10.1364/oe.16.016523.


We report the development of an in-situ aerosol detection system capable of rapidly measuring dual-wavelength laser-induced fluorescence spectra of single particles on the fly using a single spectrometer and a single 32-anode photomultiplier array. We demonstrate the capability of this system with both reference samples and outdoor air. We present spectra from separate excitation wavelengths from the same particle that demonstrate improved discrimination capability compared with only using one excitation wavelength.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aerosols / analysis
  • Aerosols / chemistry*
  • Computer Systems
  • Equipment Design
  • Equipment Failure Analysis
  • Lasers*
  • Luminescent Measurements / instrumentation*
  • Reproducibility of Results
  • Sensitivity and Specificity
  • Spectrometry, Fluorescence / instrumentation*


  • Aerosols