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Characterization oflight-gas interaction in strongly-scattering nanoporous materials and itsimplications for tunable diode laser absorption spectroscopy
RISE - Research Institutes of Sweden, Material och produktion, IVF.ORCID-id: 0000-0003-4860-8763
ZHAW School of Engineering, Switzerland.
ZHAW School of Engineering, Switzerland .
ZHAW School of Engineering, Switzerland .
2016 (Engelska)Ingår i: Applied Physics B: Lasers and Optics, 2016, Vol. 123, s. 123-136Konferensbidrag, Muntlig presentation med publicerat abstract (Övrigt vetenskapligt)
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.

Ort, förlag, år, upplaga, sidor
2016. Vol. 123, s. 123-136
Nationell ämneskategori
Materialteknik
Identifikatorer
URN: urn:nbn:se:ri:diva-30238DOI: 10.21256/zhaw-3486OAI: oai:DiVA.org:ri-30238DiVA, id: diva2:1130099
Konferens
5th International Conference: Field Laser Applications in Industry and Research 2016 (FLAIR 2016), September 12-16, 2016, Aix-les-Bains, France
Tillgänglig från: 2017-08-08 Skapad: 2017-08-08 Senast uppdaterad: 2019-06-17Bibliografiskt granskad

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Förlagets fulltexthttps://rd.springer.com/article/10.1007/s00340-017-6705-z

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Adolfsson, Erik

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