Tm3+ doped Ga–As–S chalcogenide glasses and fibers

• Published in: Optical materials 2015-09, Vol.47, p.518-523
• Main Authors: Galstyan, A., Messaddeq, S.H., Fortin, V., Skripachev, I., Vallée, R., Galstian, T., Messaddeq, Y.
• Format: Article
• Language: English
• Subjects: Ga–As–S glasses; Rare-earth doped fibers; Tm3+ doped chalcogenide glasses
• ISSN: 0925-3467; 1873-1252
• DOI: 10.1016/j.optmat.2015.06.032

•Tm3+ doped Ga–As–S chalcogenide glass based on high purity As2S3 were produced.•The concentration ratio of Ga and Tm3+ in Ga–As–S glasses is optimized to achieve best luminescence.•Tm3+ doped optical fiber was drawn using the Ga–As–S as a new host matrix.•Three emission bands of Tm3+ ions were observed in the Ga based chalcogenide glass fiber. Tm3+ doped Ga–As–S chalcogenide glass samples were produced using As2S3 pure glass as starting materials. Their photoluminescence properties were characterized and strong emission bands were observed at 1.2μm (1H5→3H6), 1.4μm (3H4→3F4) and 1.8μm (3F4→3H6) under excitation wavelengths of 698nm and 800nm. The thulium and gallium concentrations were optimized to achieve the highest photoluminescence efficiency. From the optimal composition, a Tm3+ doped Ga–As–S fiber was drawn and its optical properties were studied.