Abstract
Tungsten-niobium-tellurite (TNT) glasses and molybdenum-niobium-tellurite (MNT) glasses have been investigated for
their potential application in broadband Raman fiber amplifier. Effects of the addition of heavy metal oxides (HMO)
(HMO=Nb2O5, WO3, or MoO3) on the thermal stability against crystallization and Raman spectral properties of tellurite
glasses have been discussed. The results suggest that the addition of HMO could largely improve the thermal stabilities of
tellurite glasses. Moreover, TNT and MNT glasses exhibit strong Raman peaks at around 848 and 915 cm-1. It is noted that
the mid-high frequency Raman region of the tellurite glass by co-doping HMO expand from 550 to 1000 cm-1 with the
maximum full width at half maximum (FWHM) of about 375 cm-1, indicating TNT and MNT glasses are promising
host-materials for broadband Raman fiber amplification.
Keywords
Tellurite glass, Thermal stability, Raman spectroscopy, Raman amplifier, Heavy metal oxides.
Citation
Q. YANG, Q. QIAN, D. D. CHEN, Q. Y. ZHANG, Z. H. JIANG, Enhanced thermal stability and broadened Raman scattering of tellurite glasses by co-doping heavy metal oxides, Optoelectronics and Advanced Materials - Rapid Communications, 3, 6, June 2009, pp.565-568 (2009).
Submitted at: May 18, 2009
Accepted at: June 15, 2009