Femtosecond laser direct writing in SiO 2 ‐Al 2 O 3 binary glasses and thermal stability of Type II permanent modifications - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of the American Ceramic Society Année : 2020

Femtosecond laser direct writing in SiO 2 ‐Al 2 O 3 binary glasses and thermal stability of Type II permanent modifications

Shuen Wei
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Yuta Tsuji
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Masahiro Shimizu
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Yasuhiko Shimotsuma
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Kiyotaka Miura
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Gang‐ding Peng
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Daniel R. Neuville

Résumé

We investigate the potential of fabricating thermally stable refractive index contrasts using femtosecond (fs) near-infrared (IR) radiation in aluminosilicate glasses. A set of pure SiO 2-Al 2 O 3 glasses are manufactured, characterized (density and Raman), and investigated after being irradiated by fs laser within the Type II regime. The formation of nanogratings is identified and studied using quantitative birefringence measurements. Their thermal stability is then investigated through 30 minutes step isochronal annealing (up to 1250°C). For both SiO 2 and 50SiO 2-50Al 2 O 3 compositions, the normalized birefringence does not decrease when tested up to 1100°C, while for the 4,6 mol% GeO 2-SiO 2 erased for 20% at 1000°C.
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Dates et versions

hal-03093307 , version 1 (04-01-2021)

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Yitao Wang, Shuen Wei, Miss R Cicconi, Yuta Tsuji, Masahiro Shimizu, et al.. Femtosecond laser direct writing in SiO 2 ‐Al 2 O 3 binary glasses and thermal stability of Type II permanent modifications. Journal of the American Ceramic Society, 2020, 103 (8), pp.4286 - 4294. ⟨10.1111/jace.17164⟩. ⟨hal-03093307⟩
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