Growth and visible spectral properties of Pr3+ doped melilite gallium crystals

IF 3.3 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2025-01-10 DOI:10.1016/j.jlumin.2025.121082

Yiyang Lin , Ling Liang , Yijian Sun , Wei Wang , Jianhui Huang , Zhenggang Zou , Guoliang Gong , Herui Wen , Chaoyang Tu

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引用次数: 0

Abstract

In this article, 1 at% Pr³⁺ doped SrGdGa₃O₇ (Pr:SGGM) and CaLaGa₃O₇ (Pr:CLGM) crystals, belong to melilite gallium structure, have been successfully grown by the Czochralski (CZ) method. Crystal structure, spectral properties, and Judd-Ofelt (J-O) theory analysis have been studied in detail. Both Pr:SGGM and Pr:CLGM crystals exhibit a strong and wide absorption band at about 450 nm; the absorption cross sections for σ-polarization are 2.39 × 10⁻²⁰ cm² and 2.36 × 10⁻²⁰ cm² with the FWHM of 10.0 nm and 8.7 nm, respectively. The maximum emission cross-section, local at 645 nm for σ-polarization, is 2.62 × 10⁻²⁰ cm² with the FWHM of 4.1 nm for SGGM crystal and 6.62 × 10⁻²⁰ cm² with the FWHM of 4.2 nm for CLGM crystal. The fluorescence lifetime of the ³P₀ level was fitted to be 24.769 μs for Pr:SGGM and 26.089 μs for Pr:CLGM crystal, completely comparable to some excellent performance Pr³⁺ ion doped oxide crystals, such as Pr:ASL and Pr:SRA crystals. The large emission cross-section and long fluorescence lifetime indicate that Pr:SGGM and Pr:CLGM crystals are promising laser mediums for ultrafast and tunable lasers in the visible light range.

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来源期刊

Journal of Luminescence 物理-光学

CiteScore

6.70

自引率

13.90%

发文量

850

审稿时长

3.8 months

期刊介绍： The purpose of the Journal of Luminescence is to provide a means of communication between scientists in different disciplines who share a common interest in the electronic excited states of molecular, ionic and covalent systems, whether crystalline, amorphous, or liquid. We invite original papers and reviews on such subjects as: exciton and polariton dynamics, dynamics of localized excited states, energy and charge transport in ordered and disordered systems, radiative and non-radiative recombination, relaxation processes, vibronic interactions in electronic excited states, photochemistry in condensed systems, excited state resonance, double resonance, spin dynamics, selective excitation spectroscopy, hole burning, coherent processes in excited states, (e.g. coherent optical transients, photon echoes, transient gratings), multiphoton processes, optical bistability, photochromism, and new techniques for the study of excited states. This list is not intended to be exhaustive. Papers in the traditional areas of optical spectroscopy (absorption, MCD, luminescence, Raman scattering) are welcome. Papers on applications (phosphors, scintillators, electro- and cathodo-luminescence, radiography, bioimaging, solar energy, energy conversion, etc.) are also welcome if they present results of scientific, rather than only technological interest. However, papers containing purely theoretical results, not related to phenomena in the excited states, as well as papers using luminescence spectroscopy to perform routine analytical chemistry or biochemistry procedures, are outside the scope of the journal. Some exceptions will be possible at the discretion of the editors.