Utilization of Te as a saturable absorber for mode-locked 2.8 µm Er3+: ZBLAN fiber laser

IF 2.6 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Optical Fiber Technology Pub Date : 2024-08-25 DOI:10.1016/j.yofte.2024.103950

Peng Liu , Ying Tian , Shuaiyi Zhang , Yongyan Liu , Xueying Yang , Enlin Cai , Bingpeng Li , Junjie Zhang , Shiqing Xu

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Abstract

In this manuscript, we present the experimental realization of a mode-locked Er3+: ZBLAN (ZrF₂- BaF₂- LaF₃- AlF₃- NaF) fiber laser operating at mid-infrared (mid-IR) 2.8 μm band, achieved through the utilization of Tellurium (Te) as the saturable absorber (SA). An exploration of their nonlinear optical absorption properties at 2.8 μm was undertaken employing a dual-channel detection methodology. Our investigation reveals that the Te-SA prepared exhibits a significant broadband saturable absorption response, thereby confirming its suitability as SA for passive mode-locked fiber laser at 2.8 μm. The peak average output power pulse and energy of the mode-locked Er³⁺: ZBLAN fiber laser are 41.2mW and 1.632nJ, respectively. These measurements were conducted at a repetition rate of 25.25 MHz, accompanied by a signal-to-noise ratio (SNR) of 60 dB at a transmit pump power of 600 mW. This is the first demonstration of a mode-locked fiber laser operating in the 2.8 µm mid infrared band using Te-SA.

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将 Te 用作 2.8 µm Er3+ 模式锁定的可饱和吸收体：ZBLAN 光纤激光器

在本手稿中，我们介绍了在中红外（mid-IR）2.8 μm波段运行的模式锁定Er3+：ZBLAN（ZrF2- BaF2- LaF3- AlF3- NaF）光纤激光器，工作在中红外（mid-IR）2.8 μm 波段，利用碲（Te）作为可饱和吸收体（SA）。我们采用双通道检测方法对它们在 2.8 μm 波段的非线性光学吸收特性进行了研究。研究结果表明，制备的 Te-SA 具有显著的宽带可饱和吸收响应，从而证实了它适合用作 2.8 μm 波长无源模式锁定光纤激光器的可饱和吸收体。锁模 Er3+：ZBLAN 光纤激光器的峰值平均输出功率脉冲和能量分别为 41.2mW 和 1.632nJ。这些测量是在 25.25 MHz 的重复频率下进行的，发射泵浦功率为 600 mW 时的信噪比（SNR）为 60 dB。这是首次展示使用 Te-SA 在 2.8 µm 中红外波段工作的锁模光纤激光器。

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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.