Formation of nanogratings driven by ultrafast laser irradiation in mid-IR heavy oxide glasses
YAO, Heng
Department of Physics [Shanghai]
Institut de Chimie Moléculaire et des Matériaux d'Orsay [ICMMO]
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Department of Physics [Shanghai]
Institut de Chimie Moléculaire et des Matériaux d'Orsay [ICMMO]
YAO, Heng
Department of Physics [Shanghai]
Institut de Chimie Moléculaire et des Matériaux d'Orsay [ICMMO]
< Leer menos
Department of Physics [Shanghai]
Institut de Chimie Moléculaire et des Matériaux d'Orsay [ICMMO]
Idioma
en
Article de revue
Este ítem está publicado en
Ceramics International. 2022, vol. 48, n° 21, p. 31363-31369
Elsevier
Resumen en inglés
This work demonstrates for the first time the formation of nanogratings inside Barium Gallo-Germanate (BGG) glasses using femtosecond laser direct writing. These heavy oxide glasses, with a characterized transparency window ...Leer más >
This work demonstrates for the first time the formation of nanogratings inside Barium Gallo-Germanate (BGG) glasses using femtosecond laser direct writing. These heavy oxide glasses, with a characterized transparency window up to 6 m, 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 elements (Gd, Y) and transition metals (Zn, Ta), are directly compared to amorphous GeO2 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 containing 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
Proyecto ANR
Fabrication 3D de composants optiques intégrés à bas cout par laser femtoseconde pour des applications IR - ANR-18-CE08-0004
Orígen
Importado de HalCentros de investigación