Diode-Pumped Fluorescence in Visible Range From Femtosecond Laser Inscribed Pr:LuAG Waveguides

Lifei Sun; Chao Wang; Zemeng Cui; Ruonan Li; Yangjian Cai; Yingying Ren; Mark D. Mackenzie; Ajoy K. Kar

doi:10.3389/fphy.2021.684958

Diode-Pumped Fluorescence in Visible Range From Femtosecond Laser Inscribed Pr:LuAG Waveguides

Lifei Sun, Chao Wang, Zemeng Cui, Ruonan Li, Yangjian Cai^*, Yingying Ren, Mark D. Mackenzie, Ajoy K. Kar

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

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Abstract

Trivalent praseodymium (Pr³⁺) is the most established rare-earth ion for the direct generation of visible light. In our work, based on Pr-doped Lu₃Al₅O₁₂ (LuAG) single crystal, cladding waveguides are fabricated by applying femtosecond laser inscription with different parameters. The main characteristics of the waveguides such as mode distributions, propagation losses are investigated. The investigations on confocal micro-photoluminescence enable us to illustrate femtosecond laser induced modifications in Pr:LuAG matrix. The waveguides are further pumped at a wavelength of 450 nm with an InGaN laser diode. Guided fluorescence emissions in visible range covering green, yellow-green, orange and red are obtained with a maximum slope efficiency of 4 × 10⁻⁴.

Original language	English
Article number	684958
Journal	Frontiers in Physics
Volume	9
DOIs	https://doi.org/10.3389/fphy.2021.684958
Publication status	Published - 13 May 2021

Keywords

confocal micro-spectroscopy
femtosecond laser inscription
fluorescence
optical waveguide
Pr:LuAG crystal

ASJC Scopus subject areas

Biophysics
Materials Science (miscellaneous)
Mathematical Physics
General Physics and Astronomy
Physical and Theoretical Chemistry

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Copyright © 2021 Sun, Wang, Cui, Li, Cai, Ren, Mackenzie and Kar.
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title = "Diode-Pumped Fluorescence in Visible Range From Femtosecond Laser Inscribed Pr:LuAG Waveguides",

abstract = "Trivalent praseodymium (Pr3+) is the most established rare-earth ion for the direct generation of visible light. In our work, based on Pr-doped Lu3Al5O12 (LuAG) single crystal, cladding waveguides are fabricated by applying femtosecond laser inscription with different parameters. The main characteristics of the waveguides such as mode distributions, propagation losses are investigated. The investigations on confocal micro-photoluminescence enable us to illustrate femtosecond laser induced modifications in Pr:LuAG matrix. The waveguides are further pumped at a wavelength of 450 nm with an InGaN laser diode. Guided fluorescence emissions in visible range covering green, yellow-green, orange and red are obtained with a maximum slope efficiency of 4 × 10−4.",

keywords = "confocal micro-spectroscopy, femtosecond laser inscription, fluorescence, optical waveguide, Pr:LuAG crystal",

author = "Lifei Sun and Chao Wang and Zemeng Cui and Ruonan Li and Yangjian Cai and Yingying Ren and Mackenzie, {Mark D.} and Kar, {Ajoy K.}",

note = "Funding Information: This work is supported by National key Research and Development Project of China (2019YFA0705000), National Natural Science Foundation of China (NSFC) (11874243), Innovation Group of Jinan (2018GXRC010) and Local Science and Technology Development Project of the Central Government (No. YDZX20203700001766). Publisher Copyright: {\textcopyright} Copyright {\textcopyright} 2021 Sun, Wang, Cui, Li, Cai, Ren, Mackenzie and Kar.",

year = "2021",

month = may,

day = "13",

doi = "10.3389/fphy.2021.684958",

language = "English",

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AU - Sun, Lifei

AU - Wang, Chao

AU - Cui, Zemeng

AU - Li, Ruonan

AU - Cai, Yangjian

AU - Ren, Yingying

AU - Mackenzie, Mark D.

AU - Kar, Ajoy K.

N1 - Funding Information: This work is supported by National key Research and Development Project of China (2019YFA0705000), National Natural Science Foundation of China (NSFC) (11874243), Innovation Group of Jinan (2018GXRC010) and Local Science and Technology Development Project of the Central Government (No. YDZX20203700001766). Publisher Copyright: © Copyright © 2021 Sun, Wang, Cui, Li, Cai, Ren, Mackenzie and Kar.

PY - 2021/5/13

Y1 - 2021/5/13

N2 - Trivalent praseodymium (Pr3+) is the most established rare-earth ion for the direct generation of visible light. In our work, based on Pr-doped Lu3Al5O12 (LuAG) single crystal, cladding waveguides are fabricated by applying femtosecond laser inscription with different parameters. The main characteristics of the waveguides such as mode distributions, propagation losses are investigated. The investigations on confocal micro-photoluminescence enable us to illustrate femtosecond laser induced modifications in Pr:LuAG matrix. The waveguides are further pumped at a wavelength of 450 nm with an InGaN laser diode. Guided fluorescence emissions in visible range covering green, yellow-green, orange and red are obtained with a maximum slope efficiency of 4 × 10−4.

AB - Trivalent praseodymium (Pr3+) is the most established rare-earth ion for the direct generation of visible light. In our work, based on Pr-doped Lu3Al5O12 (LuAG) single crystal, cladding waveguides are fabricated by applying femtosecond laser inscription with different parameters. The main characteristics of the waveguides such as mode distributions, propagation losses are investigated. The investigations on confocal micro-photoluminescence enable us to illustrate femtosecond laser induced modifications in Pr:LuAG matrix. The waveguides are further pumped at a wavelength of 450 nm with an InGaN laser diode. Guided fluorescence emissions in visible range covering green, yellow-green, orange and red are obtained with a maximum slope efficiency of 4 × 10−4.

KW - confocal micro-spectroscopy

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KW - fluorescence

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KW - Pr:LuAG crystal

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Diode-Pumped Fluorescence in Visible Range From Femtosecond Laser Inscribed Pr:LuAG Waveguides

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Keywords

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