28 February 2006 Enhancement of blue thulium emission on Nd:Yb:Tm-doped YLF crystals
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In this paper we present the spectroscopic properties of YLF:Yb:Tm:Nd system identifying the most important processes that lead to the thulium blue up conversion emission, under excitation around 792 nm. Analysis of the 475 nm emission for the samples with different concentrations of Nd3+ ions showed that energy transfer between Nd3+ and Yb3+ is the main mechanism and responsible for an enhancement in up conversion.
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Lilia C. Courrol, Lilia C. Courrol, Izilda M. Ranieri, Izilda M. Ranieri, Ricardo E. Samad, Ricardo E. Samad, Sônia L. Baldochi, Sônia L. Baldochi, Laércio Gomes, Laércio Gomes, Anderson Z. de Freitas, Anderson Z. de Freitas, Nilson D. Vieira Jr., Nilson D. Vieira Jr., "Enhancement of blue thulium emission on Nd:Yb:Tm-doped YLF crystals", Proc. SPIE 6100, Solid State Lasers XV: Technology and Devices, 610010 (28 February 2006); doi: 10.1117/12.643869; https://doi.org/10.1117/12.643869

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