Pr，Er:LaF3晶体在2.7 μm激光器中的生长、光谱和激光性能

IF 3.3 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2025-06-10 DOI:10.1016/j.jlumin.2025.121358

Li Shi , Guangzhu Chen , Chun Li , Shanming Li , Chengchun Zhao , Yin Hang

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引用次数: 0

摘要

据我们所知，首次生长并报道了Pr3+和Er3+共掺杂的LaF3单晶。研究了其结构和光谱性质，并进行了Judd-Ofelt （J-O）计算。计算得到Ω2、Ω4和Ω6分别为1.70 × 10−20 cm2、0.40 × 10−20 cm2和1.13 × 10−20 cm2，荧光分支比β （4I11/2→4I13/2）为16.82%。由于Pr3+对Er3+的失活作用，Er3+:4I13/2的寿命从22.60 ms下降到4.736 ms。Pr3+有效地减弱了Er3+的自终止效应。在2.7 μm处实现了第一个连续波输出，平均功率为65 mW，表明Pr，Er:LaF3晶体是中红外激光器的潜在增益介质。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Growth, spectra, and laser properties of Pr,Er:LaF3 crystals for a 2.7 μm laser

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Growth, spectra, and laser properties of Pr,Er:LaF3 crystals for a 2.7 μm laser

A single crystal of LaF₃ co-doped with Pr³⁺ and Er³⁺ was grown and reported for the first time, to the best of our knowledge. The structure and spectral properties were investigated, and Judd-Ofelt (J-O) calculations were performed. Ω₂, Ω₄, and Ω₆ were calculated to be 1.70 × 10⁻²⁰ cm², 0.40 × 10⁻²⁰ cm², and 1.13 × 10⁻²⁰ cm², respectively, and the fluorescence branching ratio β (⁴I_11/2 → ⁴I_13/2) was 16.82 %. The lifetime of Er³⁺:⁴I_13/2 decreased from 22.60 to 4.736 ms because of the deactivation effect of Pr³⁺ on Er³⁺. Pr³⁺ effectively attenuated the self-termination effect of Er³⁺. The first continuous-wave output at 2.7 μm was achieved with an average power of 65 mW, indicating that the Pr,Er:LaF₃ crystal is a potential gain medium for mid-infrared lasers.

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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.