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Ultracompact oxygen sensor using nanoporous materials as stronglyscattering multipass cell for tunable diode laser absorption spectroscopy
Zurich University of Applied Sciences, Switzerland.
Zurich University of Applied Sciences, Switzerland.
RISE - Research Institutes of Sweden, Swerea, Swerea IVF.ORCID iD: 0000-0003-4860-8763
2017 (English)In: Optics InfoBase Conference Papers, 2017Conference paper, Published paper (Refereed)
Abstract [en]

In this work, a variety of disordered strongly-scattering nanoporous ceramic materials was systematically investigated to study the influence of the material and processing parameters on their performance. To use these materials as miniature multipass cell it is necessary to achieve the highest possible optical absorption path length (OPL). On the other hand, an increased mean OPL is associated with an increased scattering. This negatively impacts on the signal obtained from the photodiode due to the increase in the solid angle of the transmitted light and to the consequently lower collected light intensity. For practical purposes, therefore, the choice of the optimal material should be a compromise between these two aspects. The material with most promising properties proved to be ZrO2 with porosity from 50% to 55%. With samples of 6 mm thickness it is possible to realize mean OPL above 6 m.

Place, publisher, year, edition, pages
2017.
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Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-33143Scopus ID: 2-s2.0-85039920264ISBN: 9781557528209 OAI: oai:DiVA.org:ri-33143DiVA, id: diva2:1179058
Conference
The European Conference on Lasers and Electro-Optics, CLEO_Europe 2017, 25 June 2017 through 29 June 2017
Available from: 2018-01-31 Created: 2018-01-31 Last updated: 2018-05-07Bibliographically approved

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