Abstract
Intense near-infrared emission located at 1.23 μm wavelength originating from the erbium (Er3+):4S3/2→4I11/2transition is observed in Er3+-doped fluorotellurite glasses. This emission is mainly contributed by the relatively low phonon energy of the fluorotellurite glass host (∼776 cm-1). Judd-Ofelt analysis indicates a strong asymmetry and covalent environment between Er3+ions and ligands in the host matrix. The emission cross-section was calculated to be 2.85 × 10-21cm2by the Füchtbauer-Ladenburg equation, and the population inversion is realized according to a simplified evaluation. The results suggest that the fluorotellurite glass system could be a promising candidate for the development of optical amplifiers and lasers operating at the relatively unexplored 1.2 μm wavelength region.
| Original language | English |
|---|---|
| Pages (from-to) | 49-53 |
| Number of pages | 5 |
| Journal | Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy |
| Volume | 111 |
| DOIs | |
| Publication status | Published - 1 Jul 2013 |
Keywords
- Fluorotellurite glass
- Low phonon energy
- Population inversion
ASJC Scopus subject areas
- Analytical Chemistry
- Atomic and Molecular Physics, and Optics
- Instrumentation
- Spectroscopy
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