Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/19614
Title: Intense near-infrared emission of 1.23 μm in erbium-doped low-phonon-energy fluorotellurite glass
Authors: Zhou, B
Tao, L
Chan, CYY
Tsang, YH 
Jin, W
Pun, EYB
Keywords: Er3+ 1.23 μm emission
Fluorotellurite glass
Low phonon energy
Population inversion
Issue Date: 2013
Source: Spectrochimica acta - part a : molecular and biomolecular spectroscopy, 2013, v. 111, p. 49-53 How to cite?
Journal: Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy 
Abstract: Intense near-infrared emission located at 1.23 μm wavelength originating from the erbium (Er3+):4S3/2 → 4I11/2 transition 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 × 10-21 cm2 by 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.
URI: http://hdl.handle.net/10397/19614
ISSN: 1386-1425
DOI: 10.1016/j.saa.2013.03.078
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