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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 46, Iss. 16 — Jun. 1, 2007
  • pp: 3150–3155

Measurement of aerosol-particle trajectories using a structured laser beam

William D. Herzog, Shane M. Tysk, David W. Tardiff, Gregory G. Cappiello, Jason M. Jong, Thomas H. Jeys, Ronald H. Hoffeld, Antonio Sanchez, and Vincenzo Daneu  »View Author Affiliations


Applied Optics, Vol. 46, Issue 16, pp. 3150-3155 (2007)
http://dx.doi.org/10.1364/AO.46.003150


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Abstract

What is believed to be a new concept for the measurement of micrometer-sized particle trajectories in an inlet air stream is introduced. The technique uses a light source and a mask to generate a spatial pattern of light within a volume in space. Particles traverse the illumination volume and elastically scatter light to a photodetector where the signal is recorded in time. The detected scattering waveform is decoded to find the particle trajectory. A design is presented for the structured laser beam, and the accuracy of the technique in determining particle position is demonstrated. It is also demonstrated that the structured laser beam can be used to measure and then correct for the spatially dependent instrument-response function of an optical-scattering-based particle-sizing system for aerosols.

© 2007 Optical Society of America

OCIS Codes
(120.5820) Instrumentation, measurement, and metrology : Scattering measurements
(220.4830) Optical design and fabrication : Systems design

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: December 6, 2006
Manuscript Accepted: January 13, 2007
Published: May 15, 2007

Citation
William D. Herzog, Shane M. Tysk, David W. Tardiff, Gregory G. Cappiello, Jason M. Jong, Thomas H. Jeys, Ronald H. Hoffeld, Antonio Sanchez, and Vincenzo Daneu, "Measurement of aerosol-particle trajectories using a structured laser beam," Appl. Opt. 46, 3150-3155 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-16-3150


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