Thin layer deposition of TiO2 and PMMA on optical micro or nano fibers for nonlinear optics
Over the last twenty years, silica optical tapered micro or nanofibers (called ONF in the following) have been widely exploited for a large range of potential applications in several areas of research for their original properties of light propagation. The high confinement of the optical mode in the...
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EDP Sciences
2025-01-01
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| author | Divay Laurent Eustache Etienne Bouhadida Maha Larat Christian Azzoune Abderrahim Beugnot Jean-Charles Lebrun Sylvie |
| author_facet | Divay Laurent Eustache Etienne Bouhadida Maha Larat Christian Azzoune Abderrahim Beugnot Jean-Charles Lebrun Sylvie |
| author_sort | Divay Laurent |
| collection | DOAJ |
| description | Over the last twenty years, silica optical tapered micro or nanofibers (called ONF in the following) have been widely exploited for a large range of potential applications in several areas of research for their original properties of light propagation. The high confinement of the optical mode in the uniform part and the presence of a strong evanescent field near the surface make them devices of choice for nonlinear applications. In this paper we study the coating of ONF with nonlinear materials to expand further the possibilities offered by these devices. Two materials are chosen for the coatings, Titanium Dioxyde (TiO2) and Polymethyl Metacrylate (PMMA). Two processes have been developed for the coatings. Firstly, Atomic Layer Deposition has enabled to deposit controlled thin layers of TiO2 of several tens of nm on an ONF having a diameter of 1 μm with very low additional losses (0.5 dB). Secondly, we have realized a multiple layer deposition process to deposit PMMA layers on ONF. With this technique we were able to reach thicknesses of about 100 nm on ONF diameters as small as 1 μm. The encapsulation of a coated tapered fiber in silicone has been conducted, resulting in minimal additional losses, showing great promises from such a treatment. These initial experimental proofs of concept open the way for further experiments in nonlinear optics using functionalized ONF. Potential applications include the development of Raman converters within the evanescent field of the optical propagating mode, as well as experiments that necessitate precise control of phase matching. |
| format | Article |
| id | doaj-art-a53be5d69c2743e5a8b4ff6647904c8f |
| institution | DOAJ |
| issn | 1990-2573 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | EDP Sciences |
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| series | Journal of the European Optical Society-Rapid Publications |
| spelling | doaj-art-a53be5d69c2743e5a8b4ff6647904c8f2025-08-20T03:04:30ZengEDP SciencesJournal of the European Optical Society-Rapid Publications1990-25732025-01-012111510.1051/jeos/2025009jeos20250004Thin layer deposition of TiO2 and PMMA on optical micro or nano fibers for nonlinear opticsDivay Laurent0Eustache Etienne1Bouhadida Maha2Larat Christian3Azzoune Abderrahim4https://orcid.org/0000-0002-2500-9357Beugnot Jean-Charles5Lebrun Sylvie6https://orcid.org/0000-0002-5594-1364Thales Research and TechnologyThales Research and TechnologyUniversité Paris-Saclay, Institut d’Optique Graduate School, CNRS, Laboratoire Charles FabryThales Research and TechnologyEcole Militaire PolytechniqueInstitut Femto-ST, CNRS, Université Bourgogne, Franche-ComtéUniversité Paris-Saclay, Institut d’Optique Graduate School, CNRS, Laboratoire Charles FabryOver the last twenty years, silica optical tapered micro or nanofibers (called ONF in the following) have been widely exploited for a large range of potential applications in several areas of research for their original properties of light propagation. The high confinement of the optical mode in the uniform part and the presence of a strong evanescent field near the surface make them devices of choice for nonlinear applications. In this paper we study the coating of ONF with nonlinear materials to expand further the possibilities offered by these devices. Two materials are chosen for the coatings, Titanium Dioxyde (TiO2) and Polymethyl Metacrylate (PMMA). Two processes have been developed for the coatings. Firstly, Atomic Layer Deposition has enabled to deposit controlled thin layers of TiO2 of several tens of nm on an ONF having a diameter of 1 μm with very low additional losses (0.5 dB). Secondly, we have realized a multiple layer deposition process to deposit PMMA layers on ONF. With this technique we were able to reach thicknesses of about 100 nm on ONF diameters as small as 1 μm. The encapsulation of a coated tapered fiber in silicone has been conducted, resulting in minimal additional losses, showing great promises from such a treatment. These initial experimental proofs of concept open the way for further experiments in nonlinear optics using functionalized ONF. Potential applications include the development of Raman converters within the evanescent field of the optical propagating mode, as well as experiments that necessitate precise control of phase matching.https://jeos.edpsciences.org/articles/jeos/full_html/2025/01/jeos20250004/jeos20250004.htmlatomic layer depositionsilica micro or nanofibernonlinear opticstitanium dioxyde coatingpolymethyl metacrylate coating |
| spellingShingle | Divay Laurent Eustache Etienne Bouhadida Maha Larat Christian Azzoune Abderrahim Beugnot Jean-Charles Lebrun Sylvie Thin layer deposition of TiO2 and PMMA on optical micro or nano fibers for nonlinear optics Journal of the European Optical Society-Rapid Publications atomic layer deposition silica micro or nanofiber nonlinear optics titanium dioxyde coating polymethyl metacrylate coating |
| title | Thin layer deposition of TiO2 and PMMA on optical micro or nano fibers for nonlinear optics |
| title_full | Thin layer deposition of TiO2 and PMMA on optical micro or nano fibers for nonlinear optics |
| title_fullStr | Thin layer deposition of TiO2 and PMMA on optical micro or nano fibers for nonlinear optics |
| title_full_unstemmed | Thin layer deposition of TiO2 and PMMA on optical micro or nano fibers for nonlinear optics |
| title_short | Thin layer deposition of TiO2 and PMMA on optical micro or nano fibers for nonlinear optics |
| title_sort | thin layer deposition of tio2 and pmma on optical micro or nano fibers for nonlinear optics |
| topic | atomic layer deposition silica micro or nanofiber nonlinear optics titanium dioxyde coating polymethyl metacrylate coating |
| url | https://jeos.edpsciences.org/articles/jeos/full_html/2025/01/jeos20250004/jeos20250004.html |
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