YAO, Heng; ZAITER, Rayan; CAVILLON, Maxime; SAPALY, Benjamin; CALZAVARA, Florian; DELULLIER, Pierre; CARDINAL, Thierry; DAI, Ye; POUMELLEC, Bertrand; LANCRY, Matthieu

doi:10.1016/j.ceramint.2021.08.333

Metadatos

Licencia de uso del documento

YAO, Heng
Department of Physics, Shanghai University, 200444 Shanghai, People's Republic of China
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]

Idioma

Article de revue

Este ítem está publicado en

Ceramics International. 2021-12-15, vol. 47, n° 24, p. 34235-34241

Elsevier

Resumen en inglés

Barium germano-gallate glasses are attractive glass hosts for photonic applications in the mid-infrared region up to 6 µm. In this work, we investigate the photosensitivity of such glasses under femtosecond laser, with an emphasize on the formation of refractive index changes. Six glasses with varying compositions (including addition of K, Na, Y, and La) were studied. We observed several transformation regimes in the pulse energyrepetition rate landscape: Type I (isotropic refractive index change) and a spatial broadening regime with a phase shift Δφ > 2π rad at 550 nm. This translates into refractive index changes Δn > 10-2 and is comparable to values obtained in most chalcogenide glasses. The effect of glass composition on Δφ appears correlated to the number of non-bridging oxygen presented in the glass and is brought to evidence by monitoring the Cations/GaO3/2 ratio. This provides a way to design a range of germano-gallate glasses suitable to imprinting high refractive index contrast.< Leer menos

Palabras clave en inglés

Barium germano-gallate glass

K/Na/Y/La doping

Femtosecond laser

Refractive index change

DOI

http://dx.doi.org/10.1016/j.ceramint.2021.08.333

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 Hal

Centros de investigación

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