论文标题
充气光子晶体纤维中的超宽带超脑生成：Epsilon-Near-Zero Zero状态
Ultra-broadband supercontinuum generation in gas-filled photonic-crystal fibers: The epsilon-near-zero regime
论文作者
论文摘要
在这封信中，我们从理论上表明，可以利用空心核心光子晶体纤维内的非线性光电子化过程来通过泵送靠近中红外制度来获得宽带超脑纤维生成。在这种制度中，Kerr和光电子化非线性之间的相互作用大大提高。光电子化不断修改介质分散体，其中折射率开始显着降低并接近Epsilon-near-Zero状态。随后，由于伴随的慢灯效应，由KERR效应引起的自相度调节被增强。由于这种相互作用，获得了由具有多个分散波发射的宽带光组成的输出频谱。
In this Letter, we show theoretically that the nonlinear photoionisation process of a noble gas inside a hollow-core photonic crystal fibre can be exploited in obtaining broadband supercontinuum generation via pumping close to the mid-infrared regime. The interplay between the Kerr and photoionisation nonlinearities is strongly enhanced in this regime. Photoionisation continuously modifies the medium dispersion, in which the refractive index starts to significantly decrease and approach the epsilon-near-zero regime. Subsequently, the self-phase modulation induced by the Kerr effect is boosted because of the accompanied slow-light effect. As a result of this interplay, an output spectrum that comprises of a broadband light with multiple dispersive-wave emission is obtained.
