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.

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Cited by in corpus (5)

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• Doping and gap-size dependence of high-harmonic generation in graphene : Importance of consistent formulation of light-matter coupling
• High-harmonic generation in the Rice-Mele model: Role of intraband current originating from interband transition
• Tracking doublon-holon dynamics in high-harmonic generation from Mott insulators
• Modeling high-order harmonic generation in quantum dots using a real-space tight-binding approach