Abstract

Photoluminescent (PL) properties related to Te4+ species in zinc borate glasses are examined. Broad emission was observed by the excitation of the PL excitation peak of Te4+ present at the optical absorption edge. The emission intensity of Te4+ in 5TeO250ZnO45B2O3 glass was thermally quenched in a temperature region over 100 K, suggesting that concentration quenching preferentially occurred. The lifetime of the emission was approximately 2.5 μs, which is characteristic of relaxation from the triplet excitation state of an ns2-type center.

© 2013 Optical Society of America

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