High Harmonics and Isolated Attosecond Pulses from <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll"><mml:mrow><mml:mi>Mg</mml:mi><mml:mi mathvariant="normal">O</mml:mi></mml:mrow></mml:math>
Zahra Nourbakhsh, Nicolas Tancogne-Dejean, H. Merdji, Ángel Rubio
Abstract
On the basis of real-time ab initio calculations, we study the nonperturbative interaction of two-color laser pulses with $\mathrm{Mg}\mathrm{O}$ crystal in the strong-field regime to generate isolated attosecond pulses from high-harmonic emissions from $\mathrm{Mg}\mathrm{O}$ crystal. In this regard, we examine the impact of the characteristics of the incident pules, such as its shape, intensity, and ellipticity, as well as the consequences 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 approximately 300 as; in addition, using elliptical driving pulses, we show the generation of elliptical isolated attosecond pulses. Our work prepares the path for all-solid-state compact optical devices offering perspectives beyond traditional isolated attosecond pulses emitted from atoms.