Temperature-induced dephasing in high-order harmonic generation from solids
Abstract
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.
Cite
@article{arxiv.2205.04788,
title = {Temperature-induced dephasing in high-order harmonic generation from solids},
author = {Tao-Yuan Du and Chao Ma},
journal= {arXiv preprint arXiv:2205.04788},
year = {2022}
}