414.9 W in-band pumped Er/Yb co-doped fiber amplifier seeded by a random fiber laser.

IF 3.1 2区物理与天体物理 Q2 OPTICS Optics letters Pub Date : 2024-11-15 DOI:10.1364/OL.543989

Guanzhong Li, Dan Li, Qirong Xiao, Yuexuan Cai, Guohao Fu, Tiancheng Qi, Weilong Yu, Pei Li, Mali Gong, Ping Yan

引用次数: 0

Abstract

We demonstrated a 414.9 W large-mode-area Er/Yb co-doped fiber amplifier with a good time-domain stability, seeded by a 1568 nm random fiber laser (RFL) seed with a half-open cavity. We believe this to be the highest output power of the RFL in a 1.5 µm band to date. At the maximum output power, the optical efficiency was 36.9% and the 3 dB linewidth was 0.69 nm. The 1535 nm fiber lasers were used as the pumping source of the main amplifier to avoid the parasitic lasing of Yb ions. The spectral linewidth broadening was suppressed during the amplification process due to the stable temporal output of the RFL seed. The M² factor increased from 2.28 at 145.7 W to 2.83 at 280.8 W. Our research provides a robust approach for achieving high-power and high-spectral-purity RFLs in the 1.5 µm band.

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由随机光纤激光器播种的 414.9 W 带内泵浦 Er/Yb 共掺光纤放大器。

我们展示了具有良好时域稳定性的 414.9 W 大模区 Er/Yb 共掺光纤放大器，该放大器由带有半开腔的 1568 nm 随机光纤激光器（RFL）种子提供。我们认为这是迄今为止 1.5 µm 波段随机光纤激光器的最高输出功率。在最大输出功率下，光效率为 36.9%，3 dB 线宽为 0.69 nm。1535 nm 光纤激光器被用作主放大器的泵浦源，以避免掺镱离子的寄生激光。在放大过程中，由于 RFL 种子具有稳定的时序输出，光谱线宽变宽得到了抑制。M2 因子从 145.7 W 时的 2.28 增加到 280.8 W 时的 2.83。我们的研究为在 1.5 µm 波段实现高功率和高光谱纯度射频激光器提供了一种稳健的方法。

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

Optics letters 物理-光学

CiteScore

6.60

自引率

8.30%

发文量

2275

审稿时长

1.7 months

期刊介绍： The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community. Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.