arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2109.01280physics.optics
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光子晶体谐振腔中的连续亮暗脉冲态

A continuum of bright and dark pulse states in a photonic-crystal resonator

Su-Peng Yu, Erwan Lucas, Jizhao Zang, Scott B. Papp

摘要:

非线性是物理系统的一个强有力的决定因素。控制非线性导致有趣的物质状态和新的应用。在光学中,连续态和离散态的不同族源于非线性和群速度色散(GVD)的平衡。此外,具有局部增强或减小的场强度的状态的二分法关键地取决于非线性和异常或正常GVD的相对符号。在这里,我们介绍了一个谐振腔,无条件正常的GVD和一个单一的缺陷模式,支持黑暗,降低强度的状态和明亮,增强强度的状态。我们利用相位匹配的方法在光子晶体谐振腔中产生孤子,从而实现了由暗到亮的连续脉冲。这些稳定的时间状态是相干频率梳,具有高度可设计的光谱和超低噪声重复频率和强度特性。暗到亮连续照明克尔非线性,GVD,和激光在带隙纳米光子介质中的传播的物理作用。

英文摘要:

Nonlinearity is a powerful determinant of physical systems. Controlling nonlinearity leads to interesting states of matter and new applications. In optics, diverse families of continuous and discrete states arise from balance of nonlinearity and group-velocity dispersion (GVD). Moreover, the dichotomy of states with locally enhanced or diminished field intensity depends critically on the relative sign of nonlinearity and either anomalous or normal GVD. Here, we introduce a resonator with unconditionally normal GVD and a single defect mode that supports both dark, reduced-intensity states and bright, enhanced-intensity states. We access and explore this dark-to-bright pulse continuum by phase-matching for soliton generation with a photonic-crystal resonator, which mediates the competition of nonlinearity and normal GVD. These stationary temporal states are coherent frequency combs, featuring highly designable spectra and ultralow noise repetition-frequency and intensity characteristics. The dark-to-bright continuum illuminates physical roles of Kerr nonlinearity, GVD, and laser propagation in a gapped nanophotonic medium.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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