1. Spectroscopic properties of Er3+-doped fluorotellurite glasses modified by Nb2O5 and WO3.
- Author
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BURTAN-GWIZDAŁA, BOŻENA, REBEN, MANUELA, CISOWSKI, JAN, YOUSEF, EL SAYED, LISIECKI, RADOSŁAW, and GRELOWSKA, IWONA
- Subjects
ERBIUM compounds ,ERBIUM ,ABSORPTION spectra ,MOLECULAR spectra ,METALLIC oxides ,GLASS ,PHOTOLUMINESCENCE - Abstract
We have investigated the spectroscopic properties of Er
3+ -doped fluorotellurite glasses with the basic molar composition 75%TeO2 -10%P2 O5 -10%ZnO-5%PbF2 , modified by replacing 5% TeO2 by a metal oxide, namely WO3 or Nb2 O5 . The absorption edge of the glasses studied has been described within the Urbach approach, while the absorption and photoluminescence spectra have been analyzed in terms of the standard Judd-Ofelt theory, along with the photoluminescence decay of the4 I13/2 and4 S3/2 levels of the Er3+ ion. The absorption and emission spectra of the4 I15/2 ↔ 4I13/2 infrared transition have been analyzed within the McCumber theory to yield the peak emission cross-section and figure of merit for the amplifier gain. It appears that the fluorotellurite glass containing WO3 as a modifier is characterized by the largest figure of merit, indicating this matrix as a promising new host for doping with Er3+ ions. [ABSTRACT FROM AUTHOR]- Published
- 2019
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