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Fabry–Perot Interferometer Used to Measure Very Low Static Pressure Measurements
This paper describes the use of an optical instrument, the Fabry–Perot interferometer, adapted to measure very low pressures. The interferometer consists of two high-reflectance flat mirrors placed one in front of another. In addition, a metallic chamber contains air or a gas. In one of the faces of...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10386033/ https://www.ncbi.nlm.nih.gov/pubmed/37514786 http://dx.doi.org/10.3390/s23146493 |
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author | Calixto, Sergio Zitzumbo, Roberto Hernandez, Zacarías Malacara |
author_facet | Calixto, Sergio Zitzumbo, Roberto Hernandez, Zacarías Malacara |
author_sort | Calixto, Sergio |
collection | PubMed |
description | This paper describes the use of an optical instrument, the Fabry–Perot interferometer, adapted to measure very low pressures. The interferometer consists of two high-reflectance flat mirrors placed one in front of another. In addition, a metallic chamber contains air or a gas. In one of the faces of the chamber, a flexible thin silicone membrane is attached and, over it, one of the mirrors is glued. The other mirror rests in a fixed mechanical mounting. Light crosses both mirrors and, when it leaves them, forms an interference pattern consisting of concentric circular fringes. When the pressure is increased/decreased within the chamber, a displacement of the fringes is observed due to the movement of the glued mirror. By measuring the fringe displacement and knowing the pressure, a calibration plot can be made. Minimum pressure measurements of about tens of Pascals were achieved. |
format | Online Article Text |
id | pubmed-10386033 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-103860332023-07-30 Fabry–Perot Interferometer Used to Measure Very Low Static Pressure Measurements Calixto, Sergio Zitzumbo, Roberto Hernandez, Zacarías Malacara Sensors (Basel) Communication This paper describes the use of an optical instrument, the Fabry–Perot interferometer, adapted to measure very low pressures. The interferometer consists of two high-reflectance flat mirrors placed one in front of another. In addition, a metallic chamber contains air or a gas. In one of the faces of the chamber, a flexible thin silicone membrane is attached and, over it, one of the mirrors is glued. The other mirror rests in a fixed mechanical mounting. Light crosses both mirrors and, when it leaves them, forms an interference pattern consisting of concentric circular fringes. When the pressure is increased/decreased within the chamber, a displacement of the fringes is observed due to the movement of the glued mirror. By measuring the fringe displacement and knowing the pressure, a calibration plot can be made. Minimum pressure measurements of about tens of Pascals were achieved. MDPI 2023-07-18 /pmc/articles/PMC10386033/ /pubmed/37514786 http://dx.doi.org/10.3390/s23146493 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Communication Calixto, Sergio Zitzumbo, Roberto Hernandez, Zacarías Malacara Fabry–Perot Interferometer Used to Measure Very Low Static Pressure Measurements |
title | Fabry–Perot Interferometer Used to Measure Very Low Static Pressure Measurements |
title_full | Fabry–Perot Interferometer Used to Measure Very Low Static Pressure Measurements |
title_fullStr | Fabry–Perot Interferometer Used to Measure Very Low Static Pressure Measurements |
title_full_unstemmed | Fabry–Perot Interferometer Used to Measure Very Low Static Pressure Measurements |
title_short | Fabry–Perot Interferometer Used to Measure Very Low Static Pressure Measurements |
title_sort | fabry–perot interferometer used to measure very low static pressure measurements |
topic | Communication |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10386033/ https://www.ncbi.nlm.nih.gov/pubmed/37514786 http://dx.doi.org/10.3390/s23146493 |
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