YAO, Heng; ZAITER, Rayan; CAVILLON, Maxime; DELULLIER, Pierre; LU, Bo; CARDINAL, Thierry; DAI, Ye; POUMELLEC, Bertrand; LANCRY, Matthieu

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YAO, Heng
Department of Physics
Institut de Chimie Moléculaire et des Matériaux d'Orsay [ICMMO]

ZAITER, Rayan
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

CAVILLON, Maxime
Institut de Chimie Moléculaire et des Matériaux d'Orsay [ICMMO]

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Article de revue

Este ítem está publicado en

Ceramics International. 2022

Elsevier

Fecha de defensa

2022

Resumen en inglés

This work demonstrates for the first time the formation of nanogratings inside Barium Gallo-Germanate glasses using femtosecond laser direct writing. These heavy oxide glasses, with a characterized transparency window up to 6 µm, along with the polarization sensitive birefringent nanostructures induced by femtosecond laser, offer an excellent platform for the development of mid-Infrared photonic applications. The fabricated glasses, containing both rare earth (Gd, Y) and transition metals (Zn, Ta), are directly compared to amorphous GeO 2 and commercial alumino-germanate (Corning-9754) glasses commonly used in this field. The nanogratings processing window in each glass was investigated by varying laser parameters (pulse duration, energy, repetition rate), and electron microscopy imaging directly evidenced the porous nanostructures. Among the results, a strong form birefringence in 8% ZnO-BGG glass, e.g., up to-0.029±0.001 was reported. Finally, birefringent embedded Fresnel GRIN plates were directly written in a BGG glass, to demonstrate the functionalization potential of these materials.< Leer menos

Palabras clave en inglés

Femtosecond laser

Barium gallo-germanate glass

Nanogratings

Birefringence

Photonic applications

Orígen

Importado de Hal

Centros de investigación

Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB) - UMR 5026