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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 35, Iss. 11 — Jun. 1, 2010
  • pp: 1740–1742

Optical porosimetry and investigations of the porosity experienced by light interacting with porous media

Tomas Svensson, Erik Alerstam, Jonas Johansson, and Stefan Andersson-Engels  »View Author Affiliations

Optics Letters, Vol. 35, Issue 11, pp. 1740-1742 (2010)

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We investigate how light samples disordered porous materials such as ceramics and pharmaceutical materials. By combining photon time-of-flight spectroscopy and sensitive laser-based gas sensing, we obtain information on the extent to which light interacts with solid and pore volumes, respectively. Comparison with mercury intrusion porosimetry shows that light predominantly interacts with the solid. Analysis based on a two-state model does not fully explain observations, revealing a need for refined modeling. Nonetheless, excellent correlation between actual porosity and the porosity experienced by photons demonstrates the potential of nondestructive optical porosimetry based on gas absorption.

© 2010 Optical Society of America

OCIS Codes
(120.4290) Instrumentation, measurement, and metrology : Nondestructive testing
(290.4210) Scattering : Multiple scattering
(300.6320) Spectroscopy : Spectroscopy, high-resolution
(300.6500) Spectroscopy : Spectroscopy, time-resolved
(160.2710) Materials : Inhomogeneous optical media

ToC Category:

Original Manuscript: February 9, 2010
Revised Manuscript: April 19, 2010
Manuscript Accepted: April 19, 2010
Published: May 17, 2010

Virtual Issues
Vol. 5, Iss. 10 Virtual Journal for Biomedical Optics

Tomas Svensson, Erik Alerstam, Jonas Johansson, and Stefan Andersson-Engels, "Optical porosimetry and investigations of the porosity experienced by light interacting with porous media," Opt. Lett. 35, 1740-1742 (2010)

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