High sensitivity gas spectroscopy of porous, highly scattering solids

Tomas Svensson; Mats Andersson; Lars Rippe; Jonas Johansson; Staffan Folestad; Stefan Andersson-Engels

doi:10.1364/OL.33.000080

High sensitivity gas spectroscopy of porous, highly scattering solids

Tomas Svensson
, Mats Andersson
, Lars Rippe
, Jonas Johansson
, Staffan Folestad
, Stefan Andersson-Engels

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Pages (from-to)	80-82
Number of pages	3
Journal	Optics Letters
Volume	33
Issue number	1
DOIs	https://doi.org/10.1364/OL.33.000080
Publication status	Published - 1 Jan 2008
Externally published	Yes

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AU - Svensson, Tomas

AU - Andersson, Mats

AU - Rippe, Lars

AU - Johansson, Jonas

AU - Folestad, Staffan

AU - Andersson-Engels, Stefan

PY - 2008/1/1

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N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/39149124508

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JO - Optics Letters

JF - Optics Letters

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ER -

High sensitivity gas spectroscopy of porous, highly scattering solids

Abstract

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