CW amplified upconverted emission in blended NaYF4:Yb3+, Tm3+ and NaYF4:Yb3+, Er3+ Supraparticle

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McCormick, E. and Eling, C.J. and Alves, P. Urbano and Laurand, N.; (2025) CW amplified upconverted emission in blended NaYF4:Yb3+, Tm3+ and NaYF4:Yb3+, Er3+ Supraparticle. In: 2025 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). Conference on Lasers and Electro-Optics Europe (CLEO EUROPE) . IEEE, DEU. ISBN 9798331512521 (https://doi.org/10.1109/CLEO/Europe-EQEC65582.2025...)

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Abstract

Upconverting nanoparticles (UCNPs) have gained significant interest due to their ability to emit UV or visible light when excited in the near infrared (NIR) [1]. They exhibit long luminescence lifetimes and narrow spectroscopic features, which make them promising for applications such as colour multiplexing in biological media and security coding. While UCNPs have low absorption due to their size relative to the light's wavelength, micro-assemblies of UCNPs called supraparticles (SPs) address this limitation. SPs exhibit optical resonances and facilitate amplified stimulated emission (ASE) [2], making them a promising option for achieving intense emission.

ORCID iDs

McCormick, E., Eling, C.J. ORCID logoORCID: https://orcid.org/0000-0002-3819-2728, Alves, P. Urbano ORCID logoORCID: https://orcid.org/0000-0003-3447-6878 and Laurand, N. ORCID logoORCID: https://orcid.org/0000-0003-0486-4300;
CORE (COnnecting REpositories)