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Photosensitivity of barium germano-gallate glasses under femtosecond laser direct writing for Mid-IR applications

hal.structure.identifierDepartment of Physics, Shanghai University, 200444 Shanghai, People's Republic of China
hal.structure.identifierInstitut de Chimie Moléculaire et des Matériaux d'Orsay [ICMMO]
dc.contributor.authorYAO, Heng
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorZAITER, Rayan
hal.structure.identifierInstitut de Chimie Moléculaire et des Matériaux d'Orsay [ICMMO]
dc.contributor.authorCAVILLON, Maxime
hal.structure.identifierInstitut de Chimie Moléculaire et des Matériaux d'Orsay [ICMMO]
dc.contributor.authorSAPALY, Benjamin
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCALZAVARA, Florian
hal.structure.identifierDepartment of Physics, Shanghai University, 200444 Shanghai, People's Republic of China
hal.structure.identifierDOTA, ONERA, Université Paris Saclay [Palaiseau]
dc.contributor.authorDELULLIER, Pierre
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCARDINAL, Thierry
hal.structure.identifierDepartment of Physics, Shanghai University, 200444 Shanghai, People's Republic of China
dc.contributor.authorDAI, Ye
hal.structure.identifierInstitut de Chimie Moléculaire et des Matériaux d'Orsay [ICMMO]
dc.contributor.authorPOUMELLEC, Bertrand
hal.structure.identifierInstitut de Chimie Moléculaire et des Matériaux d'Orsay [ICMMO]
dc.contributor.authorLANCRY, Matthieu
dc.date.issued2021-12-15
dc.identifier.issn0272-8842
dc.description.abstractEnBarium germano-gallate glasses are attractive glass hosts for photonic applications in the mid-infrared region up to 6 µm. In this work, we investigate the photosensitivity of such glasses under femtosecond laser, with an emphasize on the formation of refractive index changes. Six glasses with varying compositions (including addition of K, Na, Y, and La) were studied. We observed several transformation regimes in the pulse energyrepetition rate landscape: Type I (isotropic refractive index change) and a spatial broadening regime with a phase shift Δφ > 2π rad at 550 nm. This translates into refractive index changes Δn > 10-2 and is comparable to values obtained in most chalcogenide glasses. The effect of glass composition on Δφ appears correlated to the number of non-bridging oxygen presented in the glass and is brought to evidence by monitoring the Cations/GaO3/2 ratio. This provides a way to design a range of germano-gallate glasses suitable to imprinting high refractive index contrast.
dc.description.sponsorshipFabrication 3D de composants optiques intégrés à bas cout par laser femtoseconde pour des applications IR - ANR-18-CE08-0004
dc.language.isoen
dc.publisherElsevier
dc.subject.enBarium germano-gallate glass
dc.subject.enK/Na/Y/La doping
dc.subject.enFemtosecond laser
dc.subject.enRefractive index change
dc.title.enPhotosensitivity of barium germano-gallate glasses under femtosecond laser direct writing for Mid-IR applications
dc.typeArticle de revue
dc.identifier.doi10.1016/j.ceramint.2021.08.333
dc.subject.halChimie/Matériaux
bordeaux.journalCeramics International
bordeaux.page34235-34241
bordeaux.volume47
bordeaux.issue24
bordeaux.peerReviewedoui
hal.identifierhal-03376874
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03376874v1
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