Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5488589 | Infrared Physics & Technology | 2017 | 6 Pages |
Abstract
Tm3+-doped GeâGaâSâAgI chalcogenide glasses with the addition of La2S3 have been fabricated. The effects of La2S3 on the glass structure and the Tm3+-doped infrared emission property have been discussed. The results show that incorporation of La in the GeâGaâSâAgI glass matrix induces the dissociation of Ge-Ge metal bonds and transforms the [S3Ge-GeS3] bonds to GeS4 tetrahedra. A new peak at about 230 cmâ1 is detected in Raman spectra and a redshift at the visible absorbing cut-off edge is observed with introduction of La2S3. The La2S3-modified glasses exhibit enhanced emission intensity in both 1.46 μm and 1.8 μm emission bands and have larger solubility of rare-earth because of substitution mechanism of Tm3+ for La3+ ions. The introduction of high Tm concentration into glasses induces the attenuation of emission intensity. This phenomenon is correlated with the recurrence emission quenching effect.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Atomic and Molecular Physics, and Optics
Authors
Lini Li, Qing Jiao, Guoxiang Wang, Xinyu Huang, Ge Li, Shixun Dai, Qiuhua Nie,