Spectroscopic properties of Cr,Yb:YAG nanocrystals under intense NIR radiation
M. Chaika, R. Tomala, O. Bezkrovnyi, W. Strek
TL;DR
This paper investigates how varying Yb ion concentration affects the spectroscopic properties and energy transfer mechanisms in Cr,Yb:YAG nanocrystals under intense NIR radiation, providing insights into the LIWE phenomenon.
Contribution
It reveals the impact of Yb content on LIWE properties and elucidates energy transfer processes using multiphoton ionization theory.
Findings
Yb concentration influences the spectroscopic behavior of Cr,Yb:YAG nanocrystals.
Energy transfer between Cr3+ and Yb3+ ions is affected by Yb content.
Multiphoton ionization explains the observed LIWE phenomena.
Abstract
Laser induced white emission (LIWE) was thoroughly studied in recent decades. However, despite the progress in understanding of this phenomenon, the mechanism behind LIWE remains unclear. The present paper focuses on the influence of Yb content on the LIWE properties of Cr,Yb:YAG nanocrystals. Microstructure and optical properties of the samples were characterized and the influence of the concentration of Yb3+ ions on the spectroscopic properties of Cr,Yb:YAG and energy transfer processes between Cr3+ and Yb3+ ions was revealed. Multiphoton ionization theory was used to explain the findings of the paper.
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Taxonomy
TopicsLaser-Ablation Synthesis of Nanoparticles · Laser Material Processing Techniques · Nonlinear Optical Materials Studies