High-efficiency 1.94 μm single-oscillator monolithic thulium-doped fiber laser with more than 200 W output power

IF 10 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Today Physics Pub Date : 2025-05-16 DOI:10.1016/j.mtphys.2025.101753

Muhammad Tahir Sohail , Jinde Yin , Bowen Li , Muhammad Tayyab Sohail , Yan Peiguang

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Abstract

In this paper, we present the realization of a diode-pumped monolithic thulium-doped all-fiber laser operating at 1.94 μm, employing a single-oscillator architecture (SOA). Our findings demonstrate the production of 203.2 W of laser output power from an incident pump power of 353 W at 793 nm, achieving a remarkable slope efficiency of 61.2 %. The laser features a central wavelength of 1940.6 nm with an FWHM bandwidth of 2 nm at the output signal power of 203.2 W. Notably, the laser exhibited exceptional stability, with power variations of less than 0.2 % over a continuous 2-h operation at maximum output power. To our knowledge, this achievement marks the highest output power reached around 1.94 μm while maintaining such slope efficiency and power stability based on SOA. Additionally, we introduce an innovative splicing technique for large mode area (LMA) fibers, effectively enhancing the transmission of high-power emissions. This thulium-doped all-fiber laser holds significant promise for applications in both the medical and industrial sectors.

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输出功率大于200w的高效率1.94 μm单振单片掺铥光纤激光器

在本文中，我们提出了一个工作在1.94 μm的二极管泵浦单片掺铥全光纤激光器的实现，采用单振荡器结构（SOA）。我们的研究结果表明，在793 nm处，353 W的入射泵浦功率产生203.2 W的激光输出功率，实现了61.2%的显著斜率效率。该激光器的中心波长为1940.6 nm，频宽带宽为2 nm，输出信号功率为203.2 W。值得注意的是，激光器表现出优异的稳定性，在最大输出功率下连续工作2小时，功率变化小于0.2%。据我们所知，这一成就标志着在保持基于SOA的斜率效率和功率稳定性的同时，最高输出功率达到1.94 μm左右。此外，我们引入了一种创新的大模面积（LMA）光纤拼接技术，有效地增强了高功率发射的传输。这种掺铥全光纤激光器在医疗和工业领域的应用前景都很好。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Today Physics Materials Science-General Materials Science

CiteScore

14.00

自引率

7.80%

发文量

284

审稿时长

15 days

期刊介绍： Materials Today Physics is a multi-disciplinary journal focused on the physics of materials, encompassing both the physical properties and materials synthesis. Operating at the interface of physics and materials science, this journal covers one of the largest and most dynamic fields within physical science. The forefront research in materials physics is driving advancements in new materials, uncovering new physics, and fostering novel applications at an unprecedented pace.