Thermal modeling and performance analysis of nested-ring doping in high-power LMA-TDFLs

IF 2.6 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Optical Fiber Technology Pub Date : 2025-06-24 DOI:10.1016/j.yofte.2025.104282

Mohamed Zaki , Hamid Jouah , Mostafa Abouricha , Said Amrane

引用次数: 0

Abstract

In this paper, we present a thermal model for Tm-doped fiber lasers (TDFLs) pumped at 793 nm and emitting at kW-level output powers. The model is based on recent developments in large modal area Tm-doped fibers (LMA-TDFs) and takes into account the temperature dependence of cross sections, refractive indices, and overlap factors. It also takes into account the particular spatial distribution of Tm

^{3 +}

ions in the nested ring structure. Simulations show that the optimized nested-ring configuration of LMA-TDF effectively manages the thermal load, with a local maximum value reduced to just 26 W/m, significantly lower than conventional configurations, while maintaining the laser performance required to reach the kilowatt regime.

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高功率lma - tdfl中嵌套环掺杂的热建模与性能分析

本文建立了793 nm泵浦和kw级输出功率的掺铥光纤激光器（TDFLs）的热模型。该模型基于大模态面积掺铥光纤（lma - tdf）的最新发展，并考虑了截面、折射率和重叠因子的温度依赖性。它还考虑了tm3 +离子在嵌套环结构中的特殊空间分布。仿真结果表明，优化后的LMA-TDF嵌套环结构有效地管理了热负荷，局部最大值降至26 W/m，显著低于传统结构，同时保持了达到千瓦级所需的激光性能。

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

Optical Fiber Technology 工程技术-电信学

CiteScore

4.80

自引率

11.10%

发文量

327

审稿时长

63 days

期刊介绍： Innovations in optical fiber technology are revolutionizing world communications. Newly developed fiber amplifiers allow for direct transmission of high-speed signals over transcontinental distances without the need for electronic regeneration. Optical fibers find new applications in data processing. The impact of fiber materials, devices, and systems on communications in the coming decades will create an abundance of primary literature and the need for up-to-date reviews. Optical Fiber Technology: Materials, Devices, and Systems is a new cutting-edge journal designed to fill a need in this rapidly evolving field for speedy publication of regular length papers. Both theoretical and experimental papers on fiber materials, devices, and system performance evaluation and measurements are eligible, with emphasis on practical applications.