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Characterization of strongly scattering nanoporous materials as miniaturized multipass cell for tunable diode laser absorption spectroscopy
Zurich University of Applied Sciences, Winterthur, Switzerland.
Zurich University of Applied Sciences, Winterthur, Switzerland.
Zurich University of Applied Sciences, Winterthur, Switzerland.
RISE - Research Institutes of Sweden, Swerea, Swerea IVF, Keramer.ORCID iD: 0000-0003-4860-8763
2017 (English)In: Applied Physics B: Lasers and Optics, ISSN 09462171, Vol. 123, no 4, 136Article in journal (Refereed) Published
Abstract [en]

Through the confinement of gas in nanoporous materials, it is possible to significantly increase the path length for light–gas interaction. This enables the observation of much stronger absorption features for the confined gas molecules. In this work, we systematically characterized a variety of disordered strongly scattering ZrO2 and Al2O3 nanoporous ceramic materials to exploit the potential of gas in scattering media absorption spectroscopy. As a result, we identified a material with an unprecedented performance in terms of optical path length enhancement. In ZrO2 with thicknesses above 6 mm, the path enhancement exceeds 1000. The results obtained with near-infrared absorption spectroscopy on oxygen were validated by time-of-flight measurements at 700 nm, thus demonstrating their robustness. Finally, we report quantitative oxygen concentration measurement using nanoporous materials as miniaturized random-scattering multipass cell with an extremely simple and low-cost setup.

Place, publisher, year, edition, pages
2017. Vol. 123, no 4, 136
Keyword [en]
Absorption spectroscopy, Ceramic materials, Characterization, Infrared devices, Light absorption, Nanopores, Plasma interactions, Porous materials, Zirconium alloys
National Category
Ceramics
Identifiers
URN: urn:nbn:se:ri:diva-29422DOI: 10.1007/s00340-017-6705-zScopus ID: 2-s2.0-85017324132OAI: oai:DiVA.org:ri-29422DiVA: diva2:1092647
Available from: 2017-05-03 Created: 2017-05-03 Last updated: 2017-05-12Bibliographically approved

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