Enhancing 1.43 μm emission of Tm3+ ions by co-doing Pr3+ ions in CNGG crystals grown by the micro-pulling-down method

IF 3.8 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2025-03-01 DOI:10.1016/j.optmat.2025.116875

Zihang Chen , Di Liu , Peng Chen , Jun Guo , Peng Liu , Xiaodan Wang , Jian Liu , Xiaodong Xu , Jun Xu

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引用次数: 0

Abstract

Tm³⁺ and Pr³⁺ co-doped calcium niobium gallium garnet (Tm,Pr:CNGG) crystals have been successfully grown using the micro-pulling-down (μ-PD) method. A comprehensive analysis of their optical properties was conducted through measurements of the absorption spectra, fluorescence spectra, and fluorescence decay curves at room temperature. For 2.0 at.% Tm:CNGG crystal, the broad absorption band of Tm³⁺:³H₆→³H₄ transition was centered at around 785 nm with the full width at half maximum (FWHM) of 15.3 nm, which aligns well with the commercial AlGaAs laser diode pumping sources. The fluorescence lifetime of Tm³⁺:³F₄ level of 2 at.% Tm, 0.5 at.% Pr:CNGG crystal was quenched effectively (from 3.72 ms down to 0.36 ms). These results indicate that Pr³⁺ ions serve as effective deactivation ions, enhancing the population inversion between the ³H₄ and ³F₄ energy levels of Tm³⁺ ions, facilitating the emission of Tm,Pr:CNGG crystals in the 1.5 μm wavelength region.

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.