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In situ determination of the penetration depth of mirrors in Fabry-Perot refractometers and its influence on assessment of refractivity and pressure
Umeå University, Sweden.
Umeå University, Sweden.
Umeå University, Sweden.
Umeå University, Sweden.
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2022 (English)In: Optics Express, E-ISSN 1094-4087, Vol. 30, no 14, p. 25891-25906Article in journal (Refereed) Published
Abstract [en]

A procedure is presented for in situ determination of the frequency penetration depth of coated mirrors in Fabry-Perot (FP) based refractometers and its influence on the assessment of refractivity and pressure. It is based on assessments of the absolute frequency of the laser and the free spectral range of the cavity. The procedure is demonstrated on an Invar-based FP cavity system with high-reflection mirrors working at 1.55 µm. The influence was assessed with such a low uncertainty that it does not significantly contribute to the uncertainties (k = 2) in the assessment of refractivity (<8 × 10−13) or pressure of nitrogen (<0.3 mPa).

Place, publisher, year, edition, pages
Optica Publishing Group (formerly OSA) , 2022. Vol. 30, no 14, p. 25891-25906
Keywords [en]
Mirrors, Refraction, Refractive index, Refractometers, Absolute frequency, Cavity system, Fabry-Perot, Fabry-Perot cavity, Free spectral range, High reflection mirrors, Uncertainty, Uncertainty analysis
National Category
Subatomic Physics
Identifiers
URN: urn:nbn:se:ri:diva-59905DOI: 10.1364/OE.463285Scopus ID: 2-s2.0-85135073412OAI: oai:DiVA.org:ri-59905DiVA, id: diva2:1686860
Note

 Funding details: 2018-04570; Funding details: Horizon 2020 Framework Programme, H2020; Funding details: Knut och Alice Wallenbergs Stiftelse; Funding details: Vetenskapsrådet, VR, 2020-00238, 2020-05105; Funding details: Umeå Universitet, IDS-18; Funding details: Kempestiftelserna; Funding text 1: European Metrology Programme for Innovation and Research (18SIB04); Vetenskapsrådet (2020-00238, 2020-05105); Umeå Universitet (IDS-18); Knut och Alice Wallenbergs Stiftelse (2020.0303); VINNOVA (2018-04570); Kempestiftelserna (1823.U12).; Funding text 2: Acknowledgments. This work has received funding from the EMPIR Programme (QuantumPascal), which is co-financed by the Participating States and from the European Union’s Horizon 2020 Research and Innovation Programme. It has also been supported by Vetenskapsrådet (VR); the Umeå University Industrial Doctoral school; Knut and Alice Wallenberg Foundation (KAW); the Vinnova Metrology Programme (2018-04570); and the Kempe Foundations. The authors additionally acknowledge technical assistance of the Umeå Core facility for Electron Microscopy (UCEM) at the Chemical Biological Centre (KBC), Umeå University.

Available from: 2022-08-11 Created: 2022-08-11 Last updated: 2023-05-25Bibliographically approved

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Zelan, Martin

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