Institute of Automation and Electrometry, SB RAS, Koptyug Avenue 1, Novosibirsk 630090, Russia.
Opt Lett. 2012 Oct 1;37(19):4104-6. doi: 10.1364/ol.37.004104.
The dissipative solitons (DS) generated in fiber oscillators with mode-locking mechanism based on nonlinear polarization evolution in a single-mode fiber exhibit stability and energy limits at the cavity lengthening. We demonstrate an alternative approach that enables us to increase the cavity length of the DS oscillator up to 30 m, namely, by the use of a long section of polarization-maintaining (PM) fiber in an all-fiber cavity configuration. We have also identified the next limit of energy scaling related to the onset of Raman conversion of the DS spectrum. The maximum energy of the stable highly chirped DS realized with a 5.5 μm core PM fiber, amounts to ~20 nJ in ~200 fs pulses after a grating compressor. As a next step, energy scaling by means of a fiber core enlargement is discussed.
基于单模光纤中非线性偏振演化的锁模机制产生的耗散孤子（DS）在腔长增加时表现出稳定性和能量限制。我们展示了一种替代方法，使我们能够将 DS 振荡器的腔长增加到 30 米，即在全光纤腔结构中使用长的保偏（PM）光纤段。我们还确定了与 DS 光谱的拉曼转换开始相关的下一个能量缩放限制。在经过光栅压缩器后，在具有 5.5μm 芯 PM 光纤的稳定高啁啾 DS 中实现的最大能量约为 20nJ 的 200fs 脉冲。下一步，讨论了通过光纤芯增大进行能量缩放的方法。
