High Harmonics and Isolated Attosecond Pulses from $\mathrm{Mg}\mathrm{O}$

Open Access

High Harmonics and Isolated Attosecond Pulses from $Mg O$

Zahra Nourbakhsh, Nicolas Tancogne-Dejean, Hamed Merdji, and Angel Rubio

Phys. Rev. Applied 15, 014013 – Published 8 January 2021

Abstract

On the basis of real-time ab initio calculations, we study the nonperturbative interaction of two-color laser pulses with $Mg O$ crystal in the strong-field regime to generate isolated attosecond pulses from high-harmonic emissions from $Mg O$ 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.

Received 14 October 2020
Revised 1 December 2020
Accepted 8 December 2020

DOI:https://doi.org/10.1103/PhysRevApplied.15.014013

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Open access publication funded by the Max Planck Society.

Published by the American Physical Society

Physics Subject Headings (PhySH)

High-order harmonic generation Light-matter interaction

Optical sources & detectors Oxides

Attosecond laser irradiation High-harmonic generation Time-dependent DFT

Condensed Matter, Materials & Applied PhysicsNonlinear Dynamics

Authors & Affiliations

Zahra Nourbakhsh ^1,*, Nicolas Tancogne-Dejean ^1,†, Hamed Merdji ², and Angel Rubio ^1,3,4,‡

¹Max Planck Institute for the Structure and Dynamics of Matter, Luruper Chaussee 149, 22761 Hamburg, Germany
²LIDYL, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 91191 Gif sur Yvette, France
³Departamento de Fisica de Materiales, Nano-Bio Spectroscopy Group and ETSF, Universidad del País Vasco UPV/EHU, 20018 San Sebastián, Spain
⁴Center for Computational Quantum Physics, The Flatiron Institute, 162 Fifth Avenue, New York, New York 10010, USA

^*zahra.nourbakhsh@mpsd.mpg.de
^†nicolas.tancogne-dejean@mpsd.mpg.de
^‡angel.rubio@mpsd.mpg.de

Article Text

Click to Expand

Supplemental Material

Click to Expand

References

Click to Expand

Issue

Vol. 15, Iss. 1 — January 2021

Subject Areas

Reuse & Permissions

Author publication services for translation and copyediting assistance advertisement

Images

Figure 1
(a) HHG spectrum corresponding to the fundamental laser; the pulse polarization is along the [100] direction. The dashed lines mark the harmonic frequencies. The solid red line indicates the $Mg O$ DFT band gap (5.4 eV). (b) Time-frequency analysis of the HHG. This figure also shows the time profile of the vector potential. The dashed black lines indicate the attosecond chirp. (c) A train of attosecond pulses resulting from the fundamental laser pulse for the given energy window. The time-dependent electric field is also displayed.
Reuse & Permissions
Figure 2
Two-color-pulse time-frequency analysis (top row) and the related IAPs (bottom row). The results for four different two-color pulses are shown; the light polarization is along the [100] direction. The titles specify the pulse characteristics; $e$ , $f$ , and $ϕ_{2}$ are as defined in Eq. (5). The dashed black line in (a) shows a negative chirp. The IAP duration and the corresponding energy windows are given in the bottom panels. The minor spaces in the IAP diagrams are equal to 1 arb. unit and their scales are marked next to the axes. The total electric field profiles are shown in light gray in the bottom row, with the same scale used for the panels.
Reuse & Permissions
Figure 3
The impact of the pulse polarization direction on high-harmonic and IAP generation. In the left panels, the pulse polarizations are along the [100], [110], and [111] directions from top to bottom. The dashed red lines specify the HHG cutoff energies. The inset plots show the corresponding IAPs. The right panels show the corresponding time-frequency analysis. Also, this figure shows the time profile of the vector potential. The dashed black lines allow the chirp of the pulse to be followed.
Reuse & Permissions
Figure 4
Ellipticity impact on high-harmonic and IAP generation. (a) Two-color-pulse HHG spectrum as a function of the second field polarization direction; the $0^{\circ}$ direction corresponds to the [100] direction. (b)–(d) The polarization-resolved calculated time-frequency spectra: (b) for the nonrotated case or the linearly polarized two-color pulse; (c),(d) for the second field polarization rotation of $θ = 45^{\circ}$ . The first and second rows show, respectively, the time-frequency plots for the $y$ -polarized and $x$ -polarized harmonics; for the nonrotated case displayed in (b), high harmonics are totally polarized along the pulse polarization direction ( $x$ direction here). The polarization-resolved vector-potential profiles are also shown, with the same scale used for the panels. (e),(f) The corresponding polarization-resolved IAPs.
Reuse & Permissions

Physical Review Applied

High Harmonics and Isolated Attosecond Pulses from MgO

Zahra Nourbakhsh, Nicolas Tancogne-Dejean, Hamed Merdji, and Angel Rubio

Phys. Rev. Applied 15, 014013 – Published 8 January 2021

Abstract

Physics Subject Headings (PhySH)

Authors & Affiliations

Article Text

Supplemental Material

References

Issue

Subject Areas

Authorization Required

Other Options

Download & Share

Images

Figure 1

Figure 2

Figure 3

Figure 4

Reuse & Permissions

Log In

Search

Article Lookup

Paste a citation or DOI

Enter a citation

High Harmonics and Isolated Attosecond Pulses from $Mg O$