Opto-thermal simulation model for optimizing the thermal response of the optical properties of Ce:YAG single-crystal phosphors

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

doi:10.1117/12.2597095

21 September 2021 Opto-thermal simulation model for optimizing the thermal response of the optical properties of Ce:YAG single-crystal phosphors

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

Author Affiliations +

Proceedings Volume 11875, Computational Optics 2021; 118750G (2021) https://doi.org/10.1117/12.2597095
Event: SPIE Optical Systems Design, 2021, Online Only

Abstract

As laser diodes (LDs) replace LEDs in the remote phosphor setup, a new class of lighting solutions emerges, giving rise to laser-excited remote phosphor (LERP) systems. While already in use in some commercial applications such as automotive lighting, these systems have not yet matured. The optical behavior of phosphors is temperature dependent, specifically the absorption coefficient, the conversion efficiency reflected in the quantum efficiency (QE) coefficient, and, to a lesser extent, the emission spectrum. For this reason, opto-thermal analysis is critical for further investigating and optimizing these systems. A steady-state opto-thermal simulation scheme that combines ray tracing in OpticStudio software with heat transfer calculations using the finite element method (F.E.M.) in ANSYS is presented and experimentally validated here. Furthermore, the temperature-dependent models established for phosphor properties are used to optimize the phosphor sample.

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Citation Download Citation

Elisavet Chatzizyrli, Angeliki Afentaki, Moritz Hinkelmann, Roland Lachmayer, Jörg Neumann, and Dietmar Kracht "Opto-thermal simulation model for optimizing the thermal response of the optical properties of Ce:YAG single-crystal phosphors", Proc. SPIE 11875, Computational Optics 2021, 118750G (21 September 2021); https://doi.org/10.1117/12.2597095

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