Concentration quenching of fluorescence from the ³P₀ +³P₁ manifold in heavily-doped Pr³⁴: ZBAN glasses

Title: Concentration quenching of fluorescence from the ³P₀ +³P₁ manifold in heavily-doped Pr³⁴: ZBAN glasses
Creator: Gibbs, W .E. K.; Holdsworth, J. L.
Relation: Journal of Non-Crytalline Solids Vol. 344, Issue 3, p. 167-169
Publisher Link: http://dx.doi.org/10.1016/j.jnoncrysol.2004.07.031
Publisher: Elsevier Science BV
Resource Type: journal article
Date: 2004
Description: Fluorescence waveforms from the (³P₀ + ³P₁) manifold in Pr³⁺ doped ZBAN glass at wavelengths of 520, 635 and 695 nm were measured for Pr³⁺ concentrations from 4 to 12 mol%. The waveforms were found to be non-exponential with decay rates rapidly increasing with Pr³⁺ concentration and independent of whether the ³P₀ or the ³P₁ level was excited. The multipolar energy transfer model was used to analyse the waveforms and this showed that concentration quenching was due to cross-relaxation by dipole–dipole interaction. The critical concentration, at which the cross-relaxation rate equals the intrinsic decay rate, was found to be of 2.06 × 10²⁶ m⁸³ (1.20 mol%). There was no evidence of excitation diffusion for Pr³⁺ concentrations of up to 12 mol%.
Subject: fluorescence waveforms; multipolar energy transfer model
Identifier: uon:2295
Identifier: http://hdl.handle.net/1959.13/28894
Identifier: ISSN:0022-3093
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