Near-IR emission of Er3+ ions in CsCl-Ga-Ge-S glasses excited by visible light

J. Bunton , Laurent Calvez (1) , V. Kadan , I. Blonskyi , O. Shpotyuk , R. Golovchak

1 ISCR - Institut des Sciences Chimiques de Rennes

Fluorescence of 65GeS2-25Ga2S3-10CsCl glasses doped with Er has been investigated at room and liquid nitrogen temperatures. Strong emission lines at ∼1 and ∼1.5 μm are observed at room temperature in Er-doped samples when excited with ∼530 nm wavelength. At cryogenic temperature, this fluorescence is observed even at lower excitation wavelengths (∼400–450 nm). The other observed emission and absorption lines agree well with known energy level transitions of Er3+ ions incorporated in the glass matrix and temperature behavior of absorption spectra. The difference between room and liquid nitrogen temperature up-conversion emission is observed under femtosecond pulsed 800 nm laser excitation. © 2017

Keywords: Up-conversion; Rare-earth emission; Chalcogenide glass; Fluorescence

Domains: Chemical Sciences

J. Bunton, Laurent Calvez, V. Kadan, I. Blonskyi, O. Shpotyuk, et al.. Near-IR emission of Er3+ ions in CsCl-Ga-Ge-S glasses excited by visible light. Optical Materials, 2017, 72, pp.195--200. ⟨10.1016/j.optmat.2017.06.008⟩. ⟨hal-01581246⟩