Title :
Pr+3-doped GeS2-Ga2S3-based chalcohalide glasses for 1.3 μm fibre amplifiers
Author :
Marchese, D. ; Kakarantzas, G. ; Jha, A.
Author_Institution :
Dipartimento di Elettrotecnica ed Elettronica, Politecnico di Bari, Italy
Abstract :
The low phonon energy of germanium sulphide glasses makes them ideal candidates as host material for 1.3 μm fibre amplifier applications. However, since this glass suffers from poor rare earth solubility, glass network modifiers have been employed in the glass composition, without adversely affecting either the thermal or the spectroscopic properties of the synthesised glass. In the present investigation, we report the synthesis and optical properties of modified GeS2-based chalcohalide glasses with excellent thermal characteristics suitable for drawing low loss optical fibres. 1G4-3H5 emission spectrum and fluorescence lifetime were measured in selected praseodymium (Pr+3)-doped glass compositions and a quantum efficiency of 45% was calculated. Preliminary characterization of third order nonlinearity in the designed glass pointed to remarkable results (χ (3)~1×10-11 esu) for chalcogenide glasses
Keywords :
chalcogenide glasses; drawing (mechanical); fibre lasers; fluorescence; gallium compounds; germanium compounds; laser transitions; nonlinear optical susceptibility; optical fibre fabrication; optical fibre losses; optical glass; praseodymium; radiative lifetimes; thermal stability; 1.3 μm fibre amplifiers; 1.3 mum; 45 percent; 1G4-3H5 emission spectrum; GeS2-Ga2S3:Pr; Pr3+-doped GeS2-Ga2S3-based chalcohalide glasses; chalcogenide glasses; drawing; fluorescence lifetime; glass composition; glass network modifiers; low loss optical fibres; low phonon energy; optical properties; quantum efficiency; rare earth solubility; spectroscopic properties; synthesis; thermal properties; third order nonlinearity; Germanium; Glass; Network synthesis; Optical fiber amplifiers; Optical fiber losses; Optical fibers; Optical materials; Phonons; Spectroscopy; Stimulated emission;
Conference_Titel :
Electrotechnical Conference, 1996. MELECON '96., 8th Mediterranean
Conference_Location :
Bari
Print_ISBN :
0-7803-3109-5
DOI :
10.1109/MELCON.1996.551241
