Optimizing LERP systems

opto-thermal steady-state simulation analysis and experimental validation

verfasst von

Elisavet Chatzizyrli, Angeliki Afentaki, Moritz Hinkelmann, Roland Lachmayer, Jörg Neumann, Dietmar Kracht

Abstract

Laser-excited remote phosphor (LERP) systems are the next step in solid-state lighting technology. However, the thermal stability of phosphors has long been a major concern in the reliable operation of these systems. As a result, a simulation strategy is presented here that couples the optical and thermal effects, while the phosphor properties are modeled to temperature. A simulation framework is developed in which the optical and thermal models are defined in Python using appropriate interfaces to commercial software: the ray tracing software Zemax OpticStudio for the optical analysis and the finite element method (FEM) software ANSYS Mechanical for the thermal analysis. Specifically, the steady-state opto-thermal analysis model is introduced and experimentally validated in this study based on Ce:YAG single-crystals with polished and ground surfaces. The reported experimental and simulated peak temperatures are in good agreement for both the polished/ground phosphors in the transmissive and reflective setups. A simulation study is included to demonstrate the simulation’s capabilities for optimizing LERP systems.

Organisationseinheit(en)

Institut für Produktentwicklung und Gerätebau
PhoenixD: Simulation, Fabrikation und Anwendung optischer Systeme

Externe Organisation(en)

Laser Zentrum Hannover e.V. (LZH)

Typ

Artikel

Journal

Optics express

Band

31

Seiten

22075-22091

Anzahl der Seiten

17

ISSN

1094-4087

Publikationsdatum

15.06.2023

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Atom- und Molekularphysik sowie Optik

Elektronische Version(en)

https://doi.org/10.1364/OE.489384 (Zugang: Offen)