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Related Experiment Video

Updated: Jul 25, 2025

Fabrication and Testing of Photonic Thermometers

Fabrication and Testing of Photonic Thermometers

Published on: October 24, 2018

Optimizing LERP systems: opto-thermal steady-state simulation analysis and experimental validation.

Elisavet Chatzizyrli, Angeliki Afentaki, Moritz Hinkelmann

|June 29, 2023

Summary

This study presents a simulation strategy for laser-excited remote phosphor (LERP) systems, coupling optical and thermal effects to model phosphor properties. The validated model aids in optimizing LERP system performance and reliability.

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Area of Science:

Solid-state lighting
Opto-thermal analysis
Materials science

Background:

Thermal stability of phosphors is critical for reliable laser-excited remote phosphor (LERP) systems.
Existing models often do not account for temperature-dependent phosphor properties.

Purpose of the Study:

To develop and validate a simulation strategy that couples optical and thermal effects in LERP systems.
To model phosphor properties as a function of temperature for improved accuracy.
To demonstrate the utility of the simulation framework for LERP system optimization.

Main Methods:

Developed a simulation framework in Python, interfacing with Zemax OpticStudio (optical analysis) and ANSYS Mechanical (thermal analysis).
Implemented a steady-state opto-thermal analysis model.
Experimentally validated the model using Ce:YAG single-crystals with polished and ground surfaces in transmissive and reflective setups.

Main Results:

Simulated and experimental peak temperatures showed good agreement for both polished and ground phosphors.
The opto-thermal model accurately predicts system behavior under operational conditions.
Demonstrated the capability of the simulation for optimizing LERP system design.

Conclusions:

The coupled opto-thermal simulation strategy provides a validated approach for analyzing LERP systems.
Accurate modeling of temperature-dependent phosphor properties is essential for reliable LERP system design.
This simulation framework can be used to optimize LERP systems for enhanced performance and longevity.