论文标题
超快自由载体动力学对基于石墨烯的微孔子中频率梳子产生的影响
Effects of ultrafast free-carrier dynamics on frequency comb generation in graphene-based microresonators
论文作者
论文摘要
通过开发石墨烯的超快光学特性，对腔孤子动力学的操纵，频谱光谱的精确控制以及微孔响应的非线性响应可能会对芯片光光子设备的技术进步产生巨大影响。在这里，我们报告说，由于在逼真的石墨烯覆盖的硝酸硅微孔子中的近乎恒定的自由载体动力学，可以实现在光学和近红外波长处的有效自频布鲁斯式频率梳子。我们进行稳定分析以找到稳定的空腔孤子激发区域，该区域揭示了石墨烯的非线性有助于改善设备的性能。
Manipulation of the dynamics of cavity solitons, precise control of frequency comb spectra and nonlinear response of microresonators through exploitation of the ultrafast optical properties of graphene can have an immense impact on the technological advancement of on-chip photonic devices. Here, we report that an efficient self-frequency blueshifted frequency comb at optical and near-infrared wavelengths can be achieved owing to the near-instantaneous free-carrier dynamics of graphene in a realistic graphene-covered silicon nitride microresonator. We perform a stability analysis to find the region of stable cavity soliton excitation, which reveals that the nonlinearity of graphene helps in improving the performance of the devices.
