1532 nm sensitized luminescence and up-conversion in Yb,Er:YAG transparent ceramics

1532 nm sensitized luminescence and up-conversion in Yb,Er:YAG transparent ceramics

Publication Type:

Journal Article

Source:

Optical Materials, Volume 77, p.221-225 (2018)

ISBN:

0925-3467

Abstract:

<p>Luminescent properties of Yb,Er:YAG transparent ceramics containing 5 at% Yb3+ and 0.5, 1 and 1.5 at%, respectively, Er3+ ions have been studied. It has been found that increasing of erbium ions concentration increases both efficiency of nonradiative energy transfer Yb3+ -&gt; Er3+ (which reaches 72% for 1.5 at% Er3+) and the luminescence in the range of 650-700 nm associated with F-4(9/2), (11/2) -&gt; I-4(15/2) transitions of Er3+ ions. It was also determined that the concentration quenching of sensitized luminescence of Er3+ ions at 1532 nm is associated with secondary excitation of metastable energy level of Er3+ followed by up conversion emission. (C) 2018 Elsevier B.V. All rights reserved.</p>