论文标题
在硅浮雕拓扑光子绝缘子中通过四波混合而产生的宽带共振增强频率产生
Broadband Resonance-Enhanced Frequency Generation by Four-Wave Mixing in a Silicon Floquet Topological Photonic Insulator
论文作者
论文摘要
Floquet拓扑光子绝缘子（其光传输特性由晶格的周期性驱动序列决定），比未发射的拓扑绝缘子为控制和捕获光提供了更大的灵活性，这可以在拓扑光子学中启用新颖的非线性光学应用。在这里，我们采用了一种新颖的共振效果，称为2D硅浮雕微林晶格中，称为Floquet缺陷模式共振，在存在Kerr非线性的情况下，通过四波浮雕散装模式的四波混合来证明共振增强的频率产生。通过晶格驱动序列的周期性扰动引起的紧凑，无腔共振模式，其报告的Q-因子是〜10^5的拓扑谐振器，具有低组速度分散体，可实现有效的宽带频率在几个浮球式 - brillouin zone floquet floquet topolquet拓扑媒介中的有效宽带频率产生。由于Floquet缺陷模式共振，我们在10.1 nm光谱范围内实现了波长转换，在转换效率中平均增强。我们的工作可能导致直接在受拓扑保护的光子平台上产生的强大光源。
Floquet topological photonic insulators, whose light transport properties are dictated by the periodic drive sequence of the lattice, provide more flexibility for controlling and trapping light than undriven topological insulators, which can enable novel nonlinear optics applications in topological photonics. Here, we employ a novel resonance effect called Floquet Defect Mode Resonance in a 2D silicon Floquet microring lattice to demonstrate resonance-enhanced frequency generation by four-wave mixing of Floquet bulk modes in the presence of Kerr nonlinearity. The compact, cavity-less resonance mode, induced through a periodic perturbation of the lattice drive sequence, has the largest reported Q-factor for a topological resonator of ~10^5 with low group velocity dispersion, which enables efficient broadband frequency generation over several Floquet-Brillouin zones of the Floquet topological insulator. We achieved wavelength conversion over 10.1 nm spectral range with an average enhancement of 12.5 dB in the conversion efficiency due to the Floquet Defect Mode Resonance. Our work could lead to robust light sources generated directly on a topologically-protected photonic platform.
