Chemnitz Mario, Gaida Christian, Gebhardt Martin, Stutzki Fabian, Kobelke Jens, Tünnermann Andreas, Limpert Jens, Schmidt Markus A
Opt Express. 2018 Feb 5;26(3):3221-3235. doi: 10.1364/OE.26.003221.
We report on soliton-fission mediated infrared supercontinuum generation in liquid-core step-index fibers using highly transparent carbon chlorides (CCl, CCl). By developing models for the refractive index dispersions and nonlinear response functions, dispersion engineering and pumping with an ultrafast thulium fiber laser (300 fs) at 1.92 μm, distinct soliton fission and dispersive wave generation was observed, particularly in the case of tetrachloroethylene (CCl). The measured results match simulations of both the generalized and a hybrid nonlinear Schrödinger equation, with the latter resembling the characteristics of non-instantaneous medium via a static potential term and representing a simulation tool with substantially reduced complexity. We show that CCl has the potential for observing non-instantaneous soliton dynamics along meters of liquid-core fiber opening a feasible route for directly observing hybrid soliton dynamics.
我们报道了在液芯阶跃折射率光纤中利用高透明的氯化碳（CCl、CCl）通过孤子分裂介导产生红外超连续谱。通过建立折射率色散和非线性响应函数模型，进行色散工程并使用中心波长为1.92μm的超快铥光纤激光器（300 fs）泵浦，观察到了明显的孤子分裂和色散波产生，特别是在四氯乙烯（CCl）的情况下。测量结果与广义非线性薛定谔方程和混合非线性薛定谔方程的模拟结果相匹配，后者通过一个静态势项类似于非瞬时介质的特性，并且是一个复杂度大幅降低的模拟工具。我们表明，CCl有潜力在数米长的液芯光纤中观察到非瞬时孤子动力学，为直接观察混合孤子动力学开辟了一条可行的途径。
