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Nanoscale Phase Separation in Lithium Niobium Silicate Glass by Femtosecond Laser Irradiation
Author(s) -
Cao Jing,
Poumellec Bertrand,
Mazerolles Léo,
Brisset François,
Helbert AnneLaure,
Surble Suzy,
He Xuan,
Lancry Matthieu
Publication year - 2017
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.14570
Subject(s) - materials science , femtosecond , transmission electron microscopy , crystallization , niobium , amorphous solid , nanostructure , irradiation , laser , nanoscopic scale , phase (matter) , optoelectronics , optics , nanotechnology , chemical engineering , crystallography , chemistry , metallurgy , physics , engineering , organic chemistry , nuclear physics
Understanding the phase transformation in glass and the morphology of related nanostructure after femtosecond laser irradiation is of great importance for fabricating functional optics, in which glass crystallization is involved to obtain nonlinear optical properties. We report on the crystallization inside lithium niobium silicate glass induced by fs laser irradiation. Energy‐dispersive X‐ray spectroscopy coupled to scanning transmission electron microscopy ( STEM / EDS ) and transmission electron microscopy confirm a nanoscale phase separation whereby LiNbO 3 crystals are embedded in lamella‐shaped frames of amorphous SiO 2 . The obtained nanostructure may have applications in fabricating second‐order nonlinear optical devices.