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Proceedings Paper

High photoluminescence in a new nanocrystalline active phase: YETO
Author(s): Pierre Rene Jenouvrier; Michel Langlet; Jochen Fick
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Paper Abstract

YETO (Y2-xErxTi2O7) thin films of good optical quality have been successfully deposited using the Aerosol-gel process. Strong photoluminescence (PL) emission centered at 1.53 μm was detected when pumping in a waveguiding configuration at 980 nm. Different heat-treatment procedures have been used in order to study the relationship between the spectroscopic properties and the thin films microstructure. A clear correlation between microstructure and spectroscopic properties was observed, when passing from amorphous to crystallized YETO. A single exponential PL decay with a lifetime of 7.5 ms was found for crystalline YETO films. The erbium quenching concentration in crystalline YETO is 1021 ions/cm3 and the corresponding PL lifetime is 3.5 ms. Our work shows that the dilution of the erbium ions within a Y2Ti2O7 (YTO) matrix allows to prevent short range distance interactions between the active Er3+ ions and therefore improves the spectroscopic properties with respect to pure ETO.

Paper Details

Date Published: 23 October 2002
PDF: 8 pages
Proc. SPIE 4804, Sol-Gel Optics VI, (23 October 2002); doi: 10.1117/12.453593
Show Author Affiliations
Pierre Rene Jenouvrier, INPG and ENSERG (France)
Michel Langlet, INPG (France)
Jochen Fick, ENSERG (France)

Published in SPIE Proceedings Vol. 4804:
Sol-Gel Optics VI
Edward J. A. Pope; Helmut K. Schmidt; Bruce S. Dunn; Shuichi Shibata, Editor(s)

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