Journal
OPTICAL MATERIALS
Volume 30, Issue 5, Pages 759-762Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optmat.2007.02.030
Keywords
praseodymium; YAG; waveguide; fluorescence dynamics
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In this work we discuss fluorescence properties in the visible spectral range of YAG planar waveguides highly doped with praseodymium ions. The unique set of active waveguides with dopant concentrations ranging from 0.35 up to 6 at.% enabled the investigation of dopant concentration influence on fluorescence properties. Careful spectroscopic characterization was performed, comprising concentration-dependent fluorescence spectra and fluorescence dynamics profiles of P-3(0) and D-1(2) emission under direct, one-photon excitation. In the result, the cross-relaxation constants were determined and the main mechanisms yielding to fluorescence concentration quenching were preliminarily proposed. (c) 2007 Elsevier B.V. All rights reserved.
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