Spectrally tunable phase-biased NALM mode-locked Yb:fiber laser with nJ-level pulse energy

IF 4.6 Q1 OPTICS
Saeid Ebrahimzadeh, Sakib Adnan, Yishen Li, Vito F Pecile, Jakob Fellinger, Sarper Salman, Christoph M Heyl, Ingmar Hartl, Oliver H Heckl, Gil Porat
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引用次数: 0

Abstract

Applications of mode-locked fiber lasers benefit from robust and self-starting mode-locking, spectral tuning, high pulse energy and high average power. All-polarization-maintaining (PM) fiber lasers mode-locked with a phase-biased nonlinear amplifying loop mirror (NALM) have been shown to be very robust and reliably self-starting, and provide either spectral tuning or high pulse energy, but not both. We report on a simple method for concurrent spectral tuning and nanojoule-level pulse energy scaling of an all-PM phase-biased NALM mode-locked Yb:fiber laser, which we demonstrate over a 54 nm tuning range, reaching up to 1.67 nJ pulse energy and 126 mW average power. Unlike other laser configurations, our results show that net normal dispersion is not necessary or optimal for scaling the pulse energy of this type of mode-locked fiber laser.
具有 nJ 级脉冲能量的光谱可调谐相位偏置 NALM 模式锁定光纤激光器
稳健的自启动锁模、光谱调谐、高脉冲能量和高平均功率使锁模光纤激光器的应用受益匪浅。使用相位偏置非线性放大环镜(NALM)锁模的全偏振保持(PM)光纤激光器已被证明非常稳定可靠,可以自启动,并提供光谱调谐或高脉冲能量,但不能同时提供这两种功能。我们报告了一种在 54 nm 调谐范围内同时对全 PM 相位偏置 NALM 模式锁定的掺镱光纤激光器进行光谱调谐和纳焦耳级脉冲能量扩展的简单方法。与其他激光器配置不同的是,我们的研究结果表明,净法向色散对于放大这类模式锁定光纤激光器的脉冲能量来说并不是必要的或最佳的。
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来源期刊
CiteScore
10.70
自引率
0.00%
发文量
27
审稿时长
12 weeks
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