Generation of high-energy self-mode-locked pulses in a Tm-doped fiber laser

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2024-07-31 DOI:10.1063/5.0217482

Jiancheng Zheng, Jinyu Xie, Qingqing Liu, Chaojian He, Yaoyao Qi, Li Li, Lihong He, Chibiao Liu, Xuechun Lin, Song Yang

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引用次数: 0

Abstract

The incorporation of a material-based or artificial saturable absorber into a fiber laser cavity imposes a limitation on energy enhancement owing to its low damage threshold and high environmental sensitivity. To address this issue, one promising alternative approach is the utilization of the self-mode-locking technique. Here, we present a robust self-mode-locked Tm-doped fiber laser with high pulse energy emission. A simple and compact fiber laser structure is realized by utilizing a section of a Tm-doped fiber, serving both as a gain medium and a saturable absorber. Thus, the operational stability is enhanced, especially under high-energy conditions. Furthermore, the realization of high-energy pulses is accomplished through the integration of dispersion management technique. Experimental results reveal that the maximum single-pulse energy increases from 34.8 pJ to 120.2 nJ as the round-trip group delay dispersion decreases from −0.43 to −12.40 ps2. The proposed self-mode-locked Tm-doped fiber laser under high-energy operation exhibits remarkable performance. Our results provide a simple approach to obtaining a mid-infrared laser source with high pulse energy and hold significant potential for advancing high-energy laser systems.

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在掺噻姆光纤激光器中产生高能自模式锁定脉冲

在光纤激光器腔体中加入材料或人造可饱和吸收体会限制能量的增强，原因是其损伤阈值低且对环境敏感度高。为解决这一问题，一种很有前途的替代方法是利用自调制锁定技术。在此，我们提出了一种具有高脉冲能量发射的稳健自调制掺噻姆光纤激光器。利用一段掺噻姆光纤作为增益介质和可饱和吸收体，实现了一种简单紧凑的光纤激光器结构。因此，特别是在高能量条件下，运行稳定性得到了增强。此外，通过集成色散管理技术，实现了高能量脉冲。实验结果表明，当往返群延迟色散从-0.43 ps2 减小到-12.40 ps2 时，最大单脉冲能量从 34.8 pJ 增加到 120.2 nJ。所提出的自调制掺铥光纤激光器在高能量工作条件下表现出了卓越的性能。我们的研究结果为获得高脉冲能量的中红外激光源提供了一种简单的方法，并为推动高能激光系统的发展提供了巨大的潜力。

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

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.

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