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Simple all-PM-fiber laser mode-locked with a nonlinear loop mirror

机译:简单的全PM光纤激光器与非线性环形镜锁模

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In this Letter, we present a figure-eight all-PM-fiber laser oscillator design with a nonlinear optical loop mirror as an artificial saturable absorber. Unlike previous constructions using the same mode-locking technique, our cavity is constructed entirely of polarization-maintaining (PM) fibers, making the oscillator more resistant to thermal and mechanical perturbations. Two simple and robust laser configurations that differ by the output coupling ratio (70% or 30%) are presented. The first configuration delivers high energy pulses of 3.5 nJ, and the second configuration delivers pulses of 1.6 nJ at a common repetition rate of 15 MHz. In either configuration, the pulsed operation is stable, and the laser operates in a single pulse train regime, even for pump powers approaching twice the power required for mode-locking. We have also observed that, at higher intracavity powers, stimulated Raman scattering plays a significant role. (C) 2015 Optical Society of America
机译:在这封信中,我们介绍了一种八角全PM光纤激光振荡器设计,其中非线性光学环形镜作为人造可饱和吸收体。与以前使用相同锁模技术的结构不同,我们的腔体完全由保偏(PM)光纤构成,从而使振荡器更能抵抗热和机械扰动。提出了两种简单而强大的激光器配置,它们的输出耦合率不同(70%或30%)。第一种配置提供3.5 nJ的高能量脉冲,第二种配置以15 MHz的常见重复频率提供1.6 nJ的脉冲。在这两种配置中,脉冲操作都是稳定的,并且即使在泵浦功率接近锁模所需功率的两倍的情况下,激光器也可以在单个脉冲序列中运行。我们还观察到,在更高的腔内功率下,受激拉曼散射起着重要作用。 (C)2015年美国眼镜学会

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