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Simultaneous generation of ultrabroadband noise-like pulses and intracavity third harmonic at 2 mu m

机译:同时产生超高压带状脉冲和腔内三次谐波在2亩

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We demonstrated that ultrabroadband noise-like pulses (NLPs) spanning from below 1600 nm to beyond 2300 nm can be generated in Tm-doped fiber lasers enabled by an optical microfiber. Meanwhile, pronounced red light around 660 nm was also observed, which was attributed to the intracavity third harmonic generation (THG) of ultrashort pulses by harnessing the intermodal phase matching in the optical microfiber. As far as we know, it is the first time to simultaneously observe the ultrabroadband NLPs and the intracavity THG in ultrafast fiber lasers, and it is anticipated that these ultrabroadband NLPs can be adopted as a compact broadband source for optical spectroscopy around 2 mu m and a wonderful potential seed for supercontinuum generation in the mid-infrared. Moreover, the THG of the intracavity high peak power NLPs in ultrafast fiber lasers provides a new kind of fiber-format visible light source. (C) 2020 Optical Society of America
机译:我们证明,在光学微纤维使能的TM掺杂光纤激光器中,可以在低于1600nm到超过2300nm的超高压带噪声脉冲(nlps)。 同时,还观察到围绕660nm大约660nm的发音红色光,这通过利用光学微纤维中的多式联相位匹配来归因于超短脉冲的腔内三次谐波产生(THG)。 据我们所知,这是第一次同时观察超速光纤激光器中的超吸引NLP和腔内THG,并且预计这些超读NLP可以采用围绕2μm的光谱宽带光谱源。 中红外线上超连续一代的精彩潜在种子。 此外,超快纤维激光器中的腔内高峰功率NLP的THG提供了一种新型光纤格式可见光源。 (c)2020美国光学学会

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