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Femtosecond laser direct writing in SiO 2 ‐Al 2 O 3 binary glasses and thermal stability of Type II permanent modifications
Author(s) -
Wang Yitao,
Wei Shuen,
Cicconi Miss R.,
Tsuji Yuta,
Shimizu Masahiro,
Shimotsuma Yasuhiko,
Miura Kiyotaka,
Peng GangDing,
Neuville Daniel R.,
Poumellec Bertrand,
Lancry Matthieu
Publication year - 2020
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.17164
Subject(s) - materials science , femtosecond , thermal stability , raman spectroscopy , laser , birefringence , annealing (glass) , refractive index , aluminosilicate , analytical chemistry (journal) , optics , mineralogy , optoelectronics , chemistry , composite material , biochemistry , chromatography , catalysis , physics , organic chemistry
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.