2021/04/27 by S. Sujecki, Ł. Sójka, Sujecki, Slawomir +13
Materials Science · Physics and Astronomy · #00A79 #FOS: Physical sciences #Glass properties and applications #J.2 #Optical properties and cooling technologies in crystalline materials #Optics (physics.optics) #Phase-change materials and chalcogenides
paper · pdf · doi:10.48550/arxiv.2104.13461
openalex publication_date 2021/04/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In this contribution a numerical model is developed to study the time\ndynamics of photoluminescence emitted by Tb3+ doped multimode\nchalcogenide-selenide glass fibers pumped by laser light at approximately 2\nmicrons. The model consists of a set of partial differential equations (PDEs),\nwhich describe the temporal and spatial evolution of the photon density and\nlevel populations within the fiber. In order to solve numerically the PDEs a\nMethod of Lines is applied. The modeling parameters are extracted from\nmeasurements and from data available in the literature. The numerical results\nobtained support experimental observations. In particular, the developed model\nreproduces the discrepancies that are observed between the photoluminescence\ndecay curves obtained from different points along the fiber. The numerical\nanalysis is also used to explain the source of these discrepancies.\n