论文标题
温度引起的高阶谐波产生固体的脱粒
Temperature-induced dephasing in high-order harmonic generation from solids
论文作者
论文摘要
事实证明，固体和气态目标中的高谐波产生（HHG）是产生Attosecond脉冲的强大途径，而电子 - 波散射对HHG的影响是一个关键的关键问题。在这里，我们首先通过表征间距波动来引入依赖温度的晶格振动模型。我们的结果表明，（i）晶格振动引起的结构障碍不会导致偶数谐波的产生； （ii）随着晶格温度的增长，HHG的脱位发生； （iii）开放式标记图可以预测温度依赖性HHG光谱中的最大光子能量。此外，提出了一个评估晶格温度的分类时间的公式，以识别电子 - 音波散射的时间尺度。这项工作铺平了一种研究在强场上驱动的固体中非出生的烟熏作效应的方法。
High harmonic generation (HHG) in solid and gaseous targets has been proven to be a powerful avenue for the generation of attosecond pulses, whereas the influence of electron-phonon scattering on HHG is a critical outstanding problem. Here we first introduce a temperature dependent lattice vibration model by characterizing the spacing fluctuation. Our results reveal that (i) structural disorder induced by lattice vibration does not lead to generation of even-order harmonics; (ii) dephasing of HHG occurs as the lattice temperature is growing; (iii) an open-trajectory picture predicts the maximal photon energy in the temperature-dependent HHG spectra. Moreover, a formula assessing dephasing time with lattice temperature is proposed to identify the timescale of electron-phonon scattering. This work paves a way to study non-Born-Oppenheimer effect in solids driven by strong field.
