Abstract
Optical absorption, thermoluminescence, infrared spectra and differential thermal analysis of three different tellurite glass systems viz., ZnF 2–As 2O 3–TeO 2, ZnF 2–Bi 2O 3–TeO 2 and ZnF 2–P 2O 5–TeO 2 containing 0.4% of Cr 2O 3, have been investigated. Results have been analysed in the light of different oxidation states of chromium ion and the most suitable host for lasing Cr 3+ ions has been identified and reported.
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