Laser filamentation in chalcogenide glass

Pascal Masselin (1) , David Le Coq (2) , Eugène Bychkov (1) , Eric Lépine (2) , C. Lin , Laurent Calvez (2)

1 LPCA - Laboratoire de Physico-Chimie de l'Atmosphère
2 ISCR - Institut des Sciences Chimiques de Rennes

We report laser filamentation in the bulk of chalcogenide glass with femtosecond laser pulses of energy on the nanojoule level. Spatially resolved measurements of the resulting refractive index modification are presented. The study of the pulse energy and focusing condition dependencies show that channels of positive refractive index variation of several millimeter length can easily be obtained.

Domaines: Matériaux

Pascal Masselin, David Le Coq, Eugène Bychkov, Eric Lépine, C. Lin, et al.. Laser filamentation in chalcogenide glass. Proceedings of SPIE, the International Society for Optical Engineering, 2011, pp.79931B. ⟨10.1117/12.881504⟩. ⟨hal-00854519⟩