Guanzhong Li, Dan Li, Qirong Xiao, Yuexuan Cai, Guohao Fu, Tiancheng Qi, Weilong Yu, Pei Li, Mali Gong, Ping Yan
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引用次数: 0
摘要
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。
414.9 W in-band pumped Er/Yb co-doped fiber amplifier seeded by a random fiber laser.
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.
期刊介绍:
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