High photoluminescence in a new nanocrystalline active phase: YETO

Pierre Rene Jenouvrier; Michel Langlet; Jochen Fick

doi:10.1117/12.453593

23 October 2002 High photoluminescence in a new nano-crystalline active phase: YETO

Pierre Rene Jenouvrier, Michel Langlet, Jochen Fick

Proceedings Volume 4804, Sol-Gel Optics VI; (2002) https://doi.org/10.1117/12.453593
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

YETO (Y_2-xEr_xTi₂O₇) 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.

Citation Download Citation

Pierre Rene Jenouvrier, Michel Langlet, and Jochen Fick "High photoluminescence in a new nano-crystalline active phase: YETO", Proc. SPIE 4804, Sol-Gel Optics VI, (23 October 2002); https://doi.org/10.1117/12.453593

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