发表机构
Tampere University（坦佩雷大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该研究揭示法布里-珀罗微腔中的Kerr非线性可引发自聚焦，最高使Q因子提升五倍，并发现高阶Kerr效应会提高双稳态阈值，为高Q微腔设计提供新见解。
AI 中文摘要
光学Kerr非线性是高Q值微腔中光学双稳态的核心。在此，我们表明法布里-珀罗谐振器中的光学Kerr非线性也能产生自聚焦效应，该效应可显著改变谐振器的Q因子。对于所研究的腔体，预测Q因子最多可增加五倍，这归因于侧壁泄漏的减少，并通过在弯曲腔体上进行的模拟得到证实。我们还表明，对于高Q值腔体，高阶Kerr效应在适度的输入强度下即可变得相关，对于特定的n2/n4比值，该强度随Q因子成反比缩放。我们数值研究了高阶Kerr效应对光学双稳态响应的影响，发现包含该效应可将双稳态阈值移至比标准仅含n2模型所预测的更高的输入强度。
英文摘要
Optical Kerr nonlinearity is central to optical bistability in high-Q microcavities. Here, we show that optical Kerr nonlinearities in Fabry Perot resonators can also result in self-focusing effects, that can substantially modify the Q-factors of the resonators. For the studied cavities, up to five-fold increase in Q-factors is predicted, attributed to reduction of sidewall leakage, confirmed via simulations performed on curved cavities. We also show that for high Q-factor cavities, the higher-order Kerr effect can become relevant already at modest input intensities scaling inversely with Q-factor for a particular n2/n4 ratio. We investigate numerically the role of higher-order Kerr effect on optical bistability responses and find that its inclusion can shift the bistability threshold to higher input intensities than predicted by the standard n2-only model.
