Abstract

A new type of fluoride glasses with high erbium-doping concentration (up to 6 mol. % Er3+) is investigated. The intensive 2.7 μm fluorescence is demonstrated with minimized concentration quenching. The intensity parameters and radiative properties are determined from the absorption spectrum based on the Judd–Ofelt theory. The prepared Er3+-doped ZBYA glass possesses high predicted spontaneous-transition probability (28.92s1) and large calculated emission cross section (9.8×1021cm2). All these results indicate that this Er3+-doped ZrF4-based fluoride glass has potential applications in 2.7 μm laser materials.

© 2013 Optical Society of America

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