کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1481223 | 1510461 | 2013 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Optical properties of Ge28Ga6.2S65.3:Er0.5 glass: Stark levels and optical gain coefficient Optical properties of Ge28Ga6.2S65.3:Er0.5 glass: Stark levels and optical gain coefficient](/preview/png/1481223.png)
The absorption and emission spectra corresponding to optical transitions between the 4I15/2, 4I13/2 and 4S3/2 manifolds in Er3 + ions in a Ge28Ga6.2S65.3:Er0.5 (a stoichiometrically derived composition) chalcogenide glass have been investigated at temperatures varying from 12 to 293 K. The combined analysis of spectra corresponding to 4I15/2 → 4S3/2, 4S3/2 → 4I15/2 and 4I13/2 → 4I15/2 transitions has allowed us to determine, in a self-consistent way, the energy positions of the Stark levels in the 4I15/2, 4I13/2 and 4S3/2 manifolds. The Stark levels are then used to calculate the emission cross-section and examine its spectral shape, and hence calculate the dependence of spectral optical gain coefficient on the relative population of the 4I15/2 and 4I13/2 manifolds.
► Optical properties of a Ge28Ga6.2S65.3:Er0.5 chalcogenide glass were investigated.
► Experiments were done over the range of 12 to 293 K.
► Absorption and emission spectra analyzed for Stark levels in 4I15/2, 4I13/2 and 4S3/2
► Stark levels are used to calculate the emission cross-section and examine its spectral shape.
► Spectral optical gain coefficient examined as a function of pumping
Journal: Journal of Non-Crystalline Solids - Volume 377, 1 October 2013, Pages 90–94