High-harmonics and isolated attosecond pulses from MgO

TL;DR

This study uses real-time ab initio calculations to explore how two-color laser pulses interact with MgO crystals, leading to the generation of isolated attosecond pulses and revealing the effects of pulse shape, intensity, and crystal anisotropy.

Contribution

It demonstrates the generation of isolated attosecond pulses from MgO crystals using strong field laser interactions, including elliptical pulses, advancing solid-state attosecond technology.

Findings

Predicted ~300 attosecond isolated pulses from MgO.

Showed elliptical pulses can produce elliptical attosecond pulses.

Analyzed the impact of pulse shape, intensity, and crystal anisotropy.

Abstract

On the basis of real-time ab initio calculations, we study the non-perturbative interaction of two-color laser pulses with MgO crystal in the strong field regime to generate isolated attosecond pulse from high-harmonic emissions from MgO crystal. In this regard, we examine the impact of incident pulse characteristics such as its shape, intensity, and ellipticity as well as the consequence of the crystal anisotropy on the emitted harmonics and their corresponding isolated attosecond pulses. Our calculations predict the creation of isolated attosecond pulses with a duration of ~ 300 attoseconds; in addition, using elliptical driving pulses, the generation of elliptical isolated attosecond pulses is shown. Our work prepares the path for all solid-state compact optical devices offering perspectives beyond traditional isolated attosecond pulse emitted from atoms.