High harmonic generation from bulk diamond driven by intense femtosecond laser pulse

Abstract

We present theoretical results on the high-harmonic generation (HHG) in bulk diamond induced by intense laser pulse of wavelength 800 nm and duration 15 fs. For laser intensity in the range $1\le I\le 50$ TW/cm${}^2$ above bandgap harmonics are generated after the pulse peak. We find that the intensity of individual harmonics increases non-linearly with the peak laser intensity, following a non-perturbative trend. For moderate intensity the HHG spectrum exhibits a primary plateau with noisy odd order harmonic structure and a cutoff. For increased laser intensity a secondary plateau emerges with quasi-continuous spectrum of harmonics extending beyond the 50th order. Consistently with experimental observations, we find that the cutoff energy for HHG scales linearly with the peak field strength and derivation of the cutoff law is provided.

28th edition of the International Conference on Diamond and Carbon Materials, Göthenburg, Sweden 2017

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Cited by in corpus (6)

• Determining the optimum thickness for high harmonic generation from nanoscale thin films: an ab initio computational study
• High order harmonic generation in semiconductors driven at near- and mid-IR wavelengths
• Propagation effects in high-harmonic generation from dielectric thin films
• High-harmonic generation in zinc oxide subjected to intense mid-infrared femtosecond laser pulse
• Unified Model for a Nonlinear Pulse Propagation in Composites and Optimization of THz Generation
• Blueshift of high-order harmonic generation in crystalline silicon subjected to intense femtosecond near-infrared laser pulse