论文标题
激烈激光驱动的电子动力学和固体中的高谐波产生包括拓扑作用
Intense-laser driven electron dynamics and high-harmonic generation in solids including topological effects
论文作者
论文摘要
制定了一种由激光驱动的电子动力学和大量固体中的高谐波产生的理论。在紧密结合的近似中，可以用$ 2 \ times 2 $ bloch-hamiltonians来描述这样的固体。我们的理论能够通过此类系统完全捕获高谐波生成中的拓扑效应，因为没有简化结合，偶极近似和价带可忽略的耗尽。给出了电子速度的明确分析表达。示例性地，该理论应用于强激光场中的Su-Schrieffer-Heeger链和Haldane模型。
A theory for laser-driven electron dynamics and high-harmonic generation in bulk solids with two lattice sites per unit cell of arbitrary dimension is formulated. In tight-binding approximation, such solids can be described by $2\times 2$ Bloch-Hamiltonians. Our theory is able to fully capture topological effects in high-harmonic generation by such systems because no simplifications beyond tight-binding, dipole approximation, and negligible depletion of the valence band are made. An explicit, analytical expression for the electron velocity is given. Exemplarily, the theory is applied to the Su-Schrieffer-Heeger chain and the Haldane model in strong laser fields.
