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Ability of gas modulation to reduce the pickup of fluctuations in refractometry
Umeå University, Sweden .
Umeå University, Sweden .
Umeå University, Sweden .
Umeå University, Sweden .
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2020 (English)In: Journal of the Optical Society of America. B, Optical physics, ISSN 0740-3224, E-ISSN 1520-8540, Vol. 37, no 7, p. 1956-1965Article in journal (Refereed) Published
Abstract [en]

Gas modulation refractometry is a technique for assessment of gas refractivity, density, and pressure that, by a rapid modulation of the gas, provides a means to significantly reduce the pickup of fluctuations. Although its unique feature has previously been demonstrated, no detailed explication or analysis of this ability has yet been given. This work provides a theoretical explanation, in terms of the length of the modulation cycle, of the extent to which gas modulation can reduce the pickup of fluctuations. It is indicated that a rapid modulation can significantly reduce the influence of fluctuations with Fourier frequencies lower than the inverse of the modulation cycle length, which often are those that dominate. The predictions are confirmed experimentally

Place, publisher, year, edition, pages
OSA - The Optical Society , 2020. Vol. 37, no 7, p. 1956-1965
Keywords [en]
Density of gases, Gases, Pickups, Fourier, Modulation cycles, Refractometry, Unique features, Modulation
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-50439DOI: 10.1364/JOSAB.387902Scopus ID: 2-s2.0-85092334564OAI: oai:DiVA.org:ri-50439DiVA, id: diva2:1499369
Note

Funding details: Kempestiftelserna, U12; Funding details: VINNOVA, 2018-04570, 2019-05029; Funding text 1: Vetenskapsr?det (621-2015-04374); Ume? University Industrial doctoral school (IDS); VINNOVA (2018-04570, 2019-05029);Kempestiftelserna (1823, U12).

Available from: 2020-11-09 Created: 2020-11-09 Last updated: 2023-05-25Bibliographically approved

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Zelan, Martin

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CiteExportLink to record
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  • apa
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  • Other style
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  • de-DE
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  • en-US
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  • nn-NO
  • nn-NB
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Output format
  • html
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