The unusual temperature dependence of the fluorescence lifetime in crystals

2005/05/24 by Chang‐Kui Duan, C. K. Duan, Andries Meijerink +5
Physics and Astronomy · #Advanced Chemical Physics Studies #Atomic and Molecular Physics #Laser-Matter Interactions and Applications #cond-mat.mtrl-sci

paper · pdf · doi:10.1016/j.jallcom.2005.01.077

10 pages, 2 figures, to appear on Journal of Alloys and Compounds

arxiv created 2005/05/24 · openalex publication_date 2005/06/28 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

Fluorescence lifetimes of Eu²⁺ doped in CaF₂ are measured at various temperatures between 4K and 450K. The lifetime increases with between 100K and 300K, in contrast to the usual lifetime-temperature dependence. At higher or lower temperatures the lifetime decreases with increasing temperature. The phenomenon is explained by simulation of the energy levels and lifetimes of low-lying 4f⁶5d states involved in the fluorescence.

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