|
|||||
|
|
Nanoscale Phase Separation in Lithium Niobium Silicate Glass by Femtosecond Laser Irradiation |
|
| Authors: | Jing Cao Bertrand Poumellec Léo Mazerolles François Brisset Anne‐Laure Helbert Suzy Surble Xuan He Matthieu Lancry |
| Affiliation: | 1. Synthèse, Propriété et Modélisation des Matériaux in Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS‐UPSud, Université Paris Sud in Université Paris Saclay, Orsay Cedex, France;2. Institut de Chimie et des Matériaux Paris‐Est, Université Paris Est, CNRS UMR 7182, Thiais, France;3. LEEL, NIMBE, CEA, CNRS, Université Paris‐Saclay, Gif‐sur‐Yvette, France;4. The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, China |
| Abstract: | 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 LiNbO3 crystals are embedded in lamella‐shaped frames of amorphous SiO2. The obtained nanostructure may have applications in fabricating second‐order nonlinear optical devices. |
| Keywords: | crystals/crystallization glass– ceramics phase separation nanomaterials optical materials/properties |