Comparative study of Al2O3-YAG:Ce composite ceramic and single crystal YAG:Ce phosphors for high-power laser lighting

Jian Xu; Yang Yang; Ziquan Guo; Dennis Dan Corell; Baoli Du; Bingguo Liu; Haipeng Ji; Carsten Dam-Hansen; Ole B. Jensen

doi:10.1016/j.ceramint.2020.04.101

Comparative study of Al₂O₃-YAG:Ce composite ceramic and single crystal YAG:Ce phosphors for high-power laser lighting

Jian Xu^*, Yang Yang, Ziquan Guo, Dennis Dan Corell, Baoli Du, Bingguo Liu, Haipeng Ji, Carsten Dam-Hansen, Ole B. Jensen

^*Corresponding author for this work

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Abstract

Recent studies revealed that both the Al₂O₃–Y₃Al₅O₁₂:Ce (YAG:Ce) composite ceramic (YAG-CC) and single crystalline YAG:Ce (YAG-SC) possess very high luminescence-saturation thresholds (LSTs), which makes them promising for laser lighting applications. The present study is aimed to conduct a comparative investigation between YAG-CC and YAG-SC on aspects of the laser-pumped luminescence and the associated thermal behavior. The colorimetric and photometric properties (e.g. luminous flux/efficacy, correlated color temperature, and color rendering index) were investigated systematically, by conducting the measurements using a custom-built sphere-spectroradiometer system in the transmission mode. It was found that YAG-SC has a superior LST and it could maintain a high luminous efficacy (106 lm/W) under the irradiation of a 15.33 W blue laser, while the YAG-CC saturated at around 7.76 W. Moreover, by combining the thermal imaging data with the spectral variation of the YAG-CC, novel experimental insights into the origin of luminescence saturation were revealed and proposed as the “thermally-induced absorption saturation”.

Original language	English
Journal	Ceramics International
Volume	46
Pages (from-to)	17923-17928
ISSN	0272-8842
DOIs	https://doi.org/10.1016/j.ceramint.2020.04.101
Publication status	Published - 1 Jan 2020

Keywords

Composite ceramic
Laser lighting
Luminescence saturation
Single crystal
YAG:Ce

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SpotLASE: Energy Efficient Laser Enhancement of Stage Spotlights
Dam-Hansen, C. (Project Manager), Thorseth, A. (Project Participant), Jensen, O. B. (Project Participant), Lindén, J. (Project Participant) & Corell, D. D. (Project Participant)
01/10/2017 → 31/03/2021
Project: Research

Cite this

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title = "Comparative study of Al2O3-YAG:Ce composite ceramic and single crystal YAG:Ce phosphors for high-power laser lighting",

abstract = "Recent studies revealed that both the Al2O3–Y3Al5O12:Ce (YAG:Ce) composite ceramic (YAG-CC) and single crystalline YAG:Ce (YAG-SC) possess very high luminescence-saturation thresholds (LSTs), which makes them promising for laser lighting applications. The present study is aimed to conduct a comparative investigation between YAG-CC and YAG-SC on aspects of the laser-pumped luminescence and the associated thermal behavior. The colorimetric and photometric properties (e.g. luminous flux/efficacy, correlated color temperature, and color rendering index) were investigated systematically, by conducting the measurements using a custom-built sphere-spectroradiometer system in the transmission mode. It was found that YAG-SC has a superior LST and it could maintain a high luminous efficacy (106 lm/W) under the irradiation of a 15.33 W blue laser, while the YAG-CC saturated at around 7.76 W. Moreover, by combining the thermal imaging data with the spectral variation of the YAG-CC, novel experimental insights into the origin of luminescence saturation were revealed and proposed as the “thermally-induced absorption saturation”.",

keywords = "Composite ceramic, Laser lighting, Luminescence saturation, Single crystal, YAG:Ce",

author = "Jian Xu and Yang Yang and Ziquan Guo and Corell, {Dennis Dan} and Baoli Du and Bingguo Liu and Haipeng Ji and Carsten Dam-Hansen and Jensen, {Ole B.}",

year = "2020",

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doi = "10.1016/j.ceramint.2020.04.101",

language = "English",

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journal = "Ceramics International",

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T1 - Comparative study of Al2O3-YAG:Ce composite ceramic and single crystal YAG:Ce phosphors for high-power laser lighting

AU - Xu, Jian

AU - Yang, Yang

AU - Guo, Ziquan

AU - Corell, Dennis Dan

AU - Du, Baoli

AU - Liu, Bingguo

AU - Ji, Haipeng

AU - Dam-Hansen, Carsten

AU - Jensen, Ole B.

PY - 2020/1/1

Y1 - 2020/1/1

N2 - Recent studies revealed that both the Al2O3–Y3Al5O12:Ce (YAG:Ce) composite ceramic (YAG-CC) and single crystalline YAG:Ce (YAG-SC) possess very high luminescence-saturation thresholds (LSTs), which makes them promising for laser lighting applications. The present study is aimed to conduct a comparative investigation between YAG-CC and YAG-SC on aspects of the laser-pumped luminescence and the associated thermal behavior. The colorimetric and photometric properties (e.g. luminous flux/efficacy, correlated color temperature, and color rendering index) were investigated systematically, by conducting the measurements using a custom-built sphere-spectroradiometer system in the transmission mode. It was found that YAG-SC has a superior LST and it could maintain a high luminous efficacy (106 lm/W) under the irradiation of a 15.33 W blue laser, while the YAG-CC saturated at around 7.76 W. Moreover, by combining the thermal imaging data with the spectral variation of the YAG-CC, novel experimental insights into the origin of luminescence saturation were revealed and proposed as the “thermally-induced absorption saturation”.

AB - Recent studies revealed that both the Al2O3–Y3Al5O12:Ce (YAG:Ce) composite ceramic (YAG-CC) and single crystalline YAG:Ce (YAG-SC) possess very high luminescence-saturation thresholds (LSTs), which makes them promising for laser lighting applications. The present study is aimed to conduct a comparative investigation between YAG-CC and YAG-SC on aspects of the laser-pumped luminescence and the associated thermal behavior. The colorimetric and photometric properties (e.g. luminous flux/efficacy, correlated color temperature, and color rendering index) were investigated systematically, by conducting the measurements using a custom-built sphere-spectroradiometer system in the transmission mode. It was found that YAG-SC has a superior LST and it could maintain a high luminous efficacy (106 lm/W) under the irradiation of a 15.33 W blue laser, while the YAG-CC saturated at around 7.76 W. Moreover, by combining the thermal imaging data with the spectral variation of the YAG-CC, novel experimental insights into the origin of luminescence saturation were revealed and proposed as the “thermally-induced absorption saturation”.

KW - Composite ceramic

KW - Laser lighting

KW - Luminescence saturation

KW - Single crystal

KW - YAG:Ce

U2 - 10.1016/j.ceramint.2020.04.101

DO - 10.1016/j.ceramint.2020.04.101

M3 - Journal article

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SN - 0272-8842

VL - 46

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JO - Ceramics International

JF - Ceramics International

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