Laser Annealing of Sb2Te3 2D Layers towards Nonlinear Optical Applications

Delphine Coiras (1) , Richard-Nicolas Verrone (1) , Andrea Campos (2) , Martiane Cabié (2) , Laurent Gallais (1) , Marco Minissale (3) , Julien Lumeau (4, 1) , Jean-Yves Natoli (1) , Konstantinos Iliopoulos (1)

1 FRESNEL - Institut FRESNEL
2 AMU CP2M - Centre Pluridisciplinaire de Microscopie Electronique et de Microanalyse
3 PIIM - Physique des interactions ioniques et moléculaires
4 RCMO - RCMO

In this work, we performed laser annealing of thin Sb2Te3 films to optimize crystallization time and their nonlinear optical properties. The annealed layers were studied by electron microscopy and UV–Vis spectrophotometry. Their nonlinear optical response was investigated by nonlinear transmission and Z-scan measurements. These studies were performed by a femtosecond laser system providing 400 fs laser pulses at 1030 nm. The results were compared with previous findings based on studies of oven-annealed thin films.

Mots clés: chalcogenides; nonlinear optical properties; Z-scan; ultrafast saturable absorption

Domaines: Optique / photonique

Delphine Coiras, Richard-Nicolas Verrone, Andrea Campos, Martiane Cabié, Laurent Gallais, et al.. Laser Annealing of Sb2Te3 2D Layers towards Nonlinear Optical Applications. Optics, 2022, 3, pp.234 - 242. ⟨10.3390/opt3030023⟩. ⟨hal-03819795⟩