Static, refractive and monolithic Fourier transform spectrometer: development and prototyping

Abstract Static Fourier transform spectrometers are devices that can be realized as monolithic and compact assemblies. In the “grating-based” monolithic version, they are usually realized gluing together a beam-splitter with two reflective diffraction gratings using spacers as connecting elements. I...

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Main Authors: Fabio Frassetto, Lorenzo Cocola, Paola Zuppella, Vania Da Deppo, Luca Poletto
Format: Article
Language:English
Published: Nature Portfolio 2024-01-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-023-51008-0
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author Fabio Frassetto
Lorenzo Cocola
Paola Zuppella
Vania Da Deppo
Luca Poletto
author_facet Fabio Frassetto
Lorenzo Cocola
Paola Zuppella
Vania Da Deppo
Luca Poletto
author_sort Fabio Frassetto
collection DOAJ
description Abstract Static Fourier transform spectrometers are devices that can be realized as monolithic and compact assemblies. In the “grating-based” monolithic version, they are usually realized gluing together a beam-splitter with two reflective diffraction gratings using spacers as connecting elements. In this work we present the development and test of an alternative form of this kind of instrument in which the dispersive elements are Littrow’s prisms and are glued to the splitting element, forming in this way a robust and filled structure with no air gaps. The device can work in the visible/near infrared spectral region with a resolution power that varies across the spectral range due to the dispersion of the used glasses. The absence of hollow regions inside the monolithic block makes the device extremely robust and protects the optical surfaces inside the interferometer from possible contaminations. The device can be easily miniaturized, as it does not require spacers or structural elements other than just the optical parts. The tested instrument works in the 470–850 nm wavelength range with a variable resolution between 3000 and 300.
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spelling doaj.art-ea870949aeba45aaabb3ded2185facca2024-01-14T12:24:06ZengNature PortfolioScientific Reports2045-23222024-01-011411810.1038/s41598-023-51008-0Static, refractive and monolithic Fourier transform spectrometer: development and prototypingFabio Frassetto0Lorenzo Cocola1Paola Zuppella2Vania Da Deppo3Luca Poletto4Institute for Photonics and Nanotechnologies, National Research CouncilInstitute for Photonics and Nanotechnologies, National Research CouncilInstitute for Photonics and Nanotechnologies, National Research CouncilInstitute for Photonics and Nanotechnologies, National Research CouncilInstitute for Photonics and Nanotechnologies, National Research CouncilAbstract Static Fourier transform spectrometers are devices that can be realized as monolithic and compact assemblies. In the “grating-based” monolithic version, they are usually realized gluing together a beam-splitter with two reflective diffraction gratings using spacers as connecting elements. In this work we present the development and test of an alternative form of this kind of instrument in which the dispersive elements are Littrow’s prisms and are glued to the splitting element, forming in this way a robust and filled structure with no air gaps. The device can work in the visible/near infrared spectral region with a resolution power that varies across the spectral range due to the dispersion of the used glasses. The absence of hollow regions inside the monolithic block makes the device extremely robust and protects the optical surfaces inside the interferometer from possible contaminations. The device can be easily miniaturized, as it does not require spacers or structural elements other than just the optical parts. The tested instrument works in the 470–850 nm wavelength range with a variable resolution between 3000 and 300.https://doi.org/10.1038/s41598-023-51008-0
spellingShingle Fabio Frassetto
Lorenzo Cocola
Paola Zuppella
Vania Da Deppo
Luca Poletto
Static, refractive and monolithic Fourier transform spectrometer: development and prototyping
Scientific Reports
title Static, refractive and monolithic Fourier transform spectrometer: development and prototyping
title_full Static, refractive and monolithic Fourier transform spectrometer: development and prototyping
title_fullStr Static, refractive and monolithic Fourier transform spectrometer: development and prototyping
title_full_unstemmed Static, refractive and monolithic Fourier transform spectrometer: development and prototyping
title_short Static, refractive and monolithic Fourier transform spectrometer: development and prototyping
title_sort static refractive and monolithic fourier transform spectrometer development and prototyping
url https://doi.org/10.1038/s41598-023-51008-0
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AT vaniadadeppo staticrefractiveandmonolithicfouriertransformspectrometerdevelopmentandprototyping
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