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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 33, Iss. 1 — Jan. 1, 2008
  • pp: 80–82

High sensitivity gas spectroscopy of porous, highly scattering solids

Tomas Svensson, Mats Andersson, Lars Rippe, Jonas Johansson, Staffan Folestad, and Stefan Andersson-Engels  »View Author Affiliations


Optics Letters, Vol. 33, Issue 1, pp. 80-82 (2008)
http://dx.doi.org/10.1364/OL.33.000080


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Abstract

We present minimalistic and cost-efficient instrumentation employing tunable diode laser gas spectroscopy for the characterization of porous and highly scattering solids. The sensitivity reaches 3 × 10 6 (absorption fraction), and the improvement with respect to previous work in this field is a factor of 10. We also provide the first characterization of the interference phenomenon encountered in high-resolution spectroscopy of turbid samples. Revealing that severe optical interference originates from the samples, we discuss important implications for system design. In addition, we introduce tracking coils and sample rotation as new and efficient tools for interference suppression. The great value of the approach is illustrated in an application addressing structural properties of pharmaceutical materials.

© 2008 Optical Society of America

OCIS Codes
(120.4290) Instrumentation, measurement, and metrology : Nondestructive testing
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(170.5280) Medical optics and biotechnology : Photon migration
(170.7050) Medical optics and biotechnology : Turbid media
(290.4210) Scattering : Multiple scattering
(300.6320) Spectroscopy : Spectroscopy, high-resolution

ToC Category:
Spectroscopy

History
Original Manuscript: October 23, 2007
Revised Manuscript: November 20, 2007
Manuscript Accepted: November 20, 2007
Published: December 21, 2007

Virtual Issues
Vol. 3, Iss. 2 Virtual Journal for Biomedical Optics

Citation
Tomas Svensson, Mats Andersson, Lars Rippe, Jonas Johansson, Staffan Folestad, and Stefan Andersson-Engels, "High sensitivity gas spectroscopy of porous, highly scattering solids," Opt. Lett. 33, 80-82 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-1-80


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References

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