High-Power Noise-Like Pulse Generation in a Tm-Ho Co-Doped Fiber Laser

IF 2.1 3区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Journal of Quantum Electronics Pub Date : 2025-06-27 DOI:10.1109/JQE.2025.3584001

Longwei Luo;Huanhuan Li;Xinhao Zhou;Can Li;Junjie Zhang;Shiqing Xu

引用次数: 0

Abstract

In this study, we demonstrate a high-performance passively mode-locked thulium-holmium (Tm-Ho) co-doped fiber laser utilizing a single-mode fiber-few-mode fiber-single-mode fiber (SMF-FMF-SMF) structure as an effective saturable absorber (SA) for noise-like pulse (NLP) generation. By solely adjusting the output coupling ratio from 30% to 50%, the maximum average output power at a pump power of 4.5 W is significantly increased from 238 mW to 391.2 mW in a single-pulse operation. The corresponding maximum pulse energy reaches 99.5 nJ at a repetition rate of 3.933 MHz, with a broad 3 dB bandwidth of 33.40 nm centered at 1948 nm. The laser exhibits excellent stability, as evidenced by a signal-to-noise ratio (SNR) of 69 dB. These results highlight the effectiveness of the SMF-FMF-SMF structure in improving output power and pulse characteristics, offering a promising approach for advancing high-energy mode-locked fiber lasers.

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Tm-Ho共掺光纤激光器中高功率类噪声脉冲的产生

在这项研究中，我们展示了一种高性能被动锁模铥-钬（Tm-Ho）共掺光纤激光器，利用单模光纤-少模光纤-单模光纤（SMF-FMF-SMF）结构作为有效的饱和吸收器（SA），用于产生类噪声脉冲（NLP）。通过将输出耦合比从30%调整到50%，泵浦功率为4.5 W时的最大平均输出功率从238 mW显著增加到391.2 mW。在3.933 MHz的重复频率下，最大脉冲能量达到99.5 nJ，以1948 nm为中心的3db宽带宽为33.40 nm。该激光器具有优异的稳定性，信噪比（SNR）为69 dB。这些结果突出了SMF-FMF-SMF结构在提高输出功率和脉冲特性方面的有效性，为推进高能锁模光纤激光器提供了一条有前途的途径。

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

IEEE Journal of Quantum Electronics 工程技术-工程：电子与电气

CiteScore

4.70

自引率

4.00%

发文量

审稿时长

3.0 months

期刊介绍： The IEEE Journal of Quantum Electronics is dedicated to the publication of manuscripts reporting novel experimental or theoretical results in the broad field of the science and technology of quantum electronics. The Journal comprises original contributions, both regular papers and letters, describing significant advances in the understanding of quantum electronics phenomena or the demonstration of new devices, systems, or applications. Manuscripts reporting new developments in systems and applications must emphasize quantum electronics principles or devices. The scope of JQE encompasses the generation, propagation, detection, and application of coherent electromagnetic radiation having wavelengths below one millimeter (i.e., in the submillimeter, infrared, visible, ultraviolet, etc., regions). Whether the focus of a manuscript is a quantum-electronic device or phenomenon, the critical factor in the editorial review of a manuscript is the potential impact of the results presented on continuing research in the field or on advancing the technological base of quantum electronics.