论文标题
拓扑激光器的空间和光谱模式选择效应，频率依赖性增益
Spatial and Spectral Mode-Selection Effects in Topological Lasers with Frequency-Dependent Gain
论文作者
论文摘要
我们将激光振荡的半经典理论发展为具有频率依赖性增益的拓扑光子系统的手性边缘状态。作为这种物理学的原型模型，我们认为是一个嵌入种群中的两级原子作为增益材料的Harper-Hofstadter晶格。我们表明，适当的增益空间分布及其光谱形状的设计提供了灵活的模式选择机制，可以稳定单模为边缘状态。概述了我们对最近实验的结果的含义。
We develop a semiclassical theory of laser oscillation into a chiral edge state of a topological photonic system endowed with a frequency-dependent gain. As an archetypal model of this physics, we consider a Harper-Hofstadter lattice embedding population-inverted two-level atoms as gain material. We show that a suitable design of the spatial distribution of gain and of its spectral shape provides flexible mode selection mechanisms that can stabilize single-mode lasing into an edge state. Implications of our results for recent experiments are outlined.
