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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...

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Detalles Bibliográficos
Autores principales: Calixto, Sergio, Zitzumbo, Roberto, Hernandez, Zacarías Malacara
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
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.
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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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