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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 53, Iss. 4 — Feb. 1, 2014
  • pp: 625–633

Miniaturized sensor for particles in air using Fresnel ring lenses and an enhanced intensity ratio technique

Robert Schrobenhauser, Rainer Strzoda, Alexander Hartmann, Maximilian Fleischer, and Markus-Christian Amann  »View Author Affiliations

Applied Optics, Vol. 53, Issue 4, pp. 625-633 (2014)

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We present a miniaturized particle sensor collecting scattered light in two solid angle intervals by Fresnel ring lenses. The particle size is determined from the ratio of both scattering amplitudes (intensity ratio) in addition to a linear diversity combining technique, generating a 3D particle size matrix that reduces the ambiguity by the index of refraction on the particle size identification. A signal-to-noise ratio of 30.3 was achieved for 147 nm sized polystyrene latex particles. Measurements of polydisperse particle size distribution show good agreement with the results by a scanning mobility particle sizer.

© 2014 Optical Society of America

OCIS Codes
(120.4570) Instrumentation, measurement, and metrology : Optical design of instruments
(220.4830) Optical design and fabrication : Systems design
(290.5850) Scattering : Scattering, particles
(290.2558) Scattering : Forward scattering

ToC Category:

Original Manuscript: October 31, 2013
Revised Manuscript: December 15, 2013
Manuscript Accepted: December 16, 2013
Published: January 24, 2014

Virtual Issues
February 4, 2014 Spotlight on Optics

Robert Schrobenhauser, Rainer Strzoda, Alexander Hartmann, Maximilian Fleischer, and Markus-Christian Amann, "Miniaturized sensor for particles in air using Fresnel ring lenses and an enhanced intensity ratio technique," Appl. Opt. 53, 625-633 (2014)

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