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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 19 — Jul. 1, 2013
  • pp: 4749–4754

Separation of surface and bulk reflectance by absorption of bulk scattered light

Niklas Johansson, Magnus Neuman, Mattias Andersson, and Per Edström  »View Author Affiliations

Applied Optics, Vol. 52, Issue 19, pp. 4749-4754 (2013)

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A method is proposed for separating light reflected from turbid media with a rough surface into a bulk and a surface component. Dye is added to the sample, thereby increasing absorption and canceling bulk scattering. The remaining reflected light is surface reflectance, which can be subtracted from the total reflectance of an undyed sample to obtain the bulk component. The method is applied to paper where the addition of dye is accomplished by inkjet printing. The results show that the bulk scattered light is efficiently canceled, and that both the spectrally neutral surface reflectance and the surface topography of the undyed paper is maintained. The proposed method is particularly suitable for characterization of dielectric, highly randomized materials with significant bulk reflectance and rough surfaces, which are difficult to analyze with existing methods. A reliable separation method opens up for new ways of analyzing, e.g., biological tissues and optical coatings, and is also a valuable tool in the development of more comprehensive reflectance models.

© 2013 Optical Society of America

OCIS Codes
(120.5700) Instrumentation, measurement, and metrology : Reflection
(120.5820) Instrumentation, measurement, and metrology : Scattering measurements
(290.5820) Scattering : Scattering measurements
(290.5880) Scattering : Scattering, rough surfaces
(290.7050) Scattering : Turbid media

ToC Category:

Original Manuscript: March 18, 2013
Revised Manuscript: May 27, 2013
Manuscript Accepted: June 3, 2013
Published: June 28, 2013

Virtual Issues
Vol. 8, Iss. 8 Virtual Journal for Biomedical Optics

Niklas Johansson, Magnus Neuman, Mattias Andersson, and Per Edström, "Separation of surface and bulk reflectance by absorption of bulk scattered light," Appl. Opt. 52, 4749-4754 (2013)

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