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High-energy laser pulse with a submegahertz repetition rate from a passively mode-locked fiber laser

机译:被动锁模光纤激光器具有亚兆赫兹重复频率的高能量激光脉冲

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摘要

We demonstrate an ultralong cavity, all-fiber, all-normal-dispersion Yb-doped fiber laser that is passively mode locked by a semiconductor saturable absorber mirror (SESAM). Without any discrete dispersion-compensation components or conventional spectral filters, the SESAM works together with the strongly chirped pulse and the nonlinearity induced spectrum broadening to perform a filtering-equivalent function, thus stabilizing the mode locking. The laser generates 4.3 nJ stable mode-locked pulses with a 397 kHz fundamental repetition rate at a 1068 nm central wavelength.
机译:我们演示了超长腔,全光纤,全正态色散掺Yb光纤激光器,该激光器由半导体可饱和吸收镜(SESAM)被动锁模。在没有任何离散色散补偿组件或常规频谱滤波器的情况下,SESAM与强chi脉冲和非线性感应频谱展宽一起工作,以执行等效滤波功能,从而稳定了锁模功能。激光器在1068 nm中心波长处产生4.3 nJ稳定锁模脉冲,其基本重复率为397 kHz。

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