High Harmonics and Isolated Attosecond Pulses from MgO

@article{Nourbakhsh2020HighHA,
  title={High Harmonics and Isolated Attosecond Pulses from 
MgO},
  author={Zahra Nourbakhsh and Nicolas Tancogne-Dejean and Hamed Merdji and {\'A}ngel Rubio},
  journal={arXiv: Optics},
  year={2020}
}
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… 

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References

SHOWING 1-10 OF 63 REFERENCES
Isolated Single-Cycle Attosecond Pulses
TLDR
The availability of single-cycle isolated attosecond pulses opens the way to a new regime in ultrafast physics, in which the strong-field electron dynamics in atoms and molecules is driven by the electric field of the attose Cond pulses rather than by their intensity profile.
Isolated attosecond pulses using a detuned second-harmonic field.
TLDR
The slight detuning deltaomega of the second harmonic is used to break the symmetry of the electric field over many optical cycles and provides a coherent control for the formation of an isolated attosecond pulse.
The generation, characterization and applications of broadband isolated attosecond pulses
The generation of extremely short isolated attosecond pulses requires both a broad spectral bandwidth and control of the spectral phase. Rapid progress has been made in both aspects, leading to the
53-attosecond X-ray pulses reach the carbon K-edge
TLDR
A soft X-ray pulse duration of 53 is demonstrated as and single pulse streaking reaching the carbon K-absorption edge (284 eV) by utilizing intense two-cycle driving pulses near 1.8-μm center wavelength.
Attosecond Synchronization of High-Harmonic Soft X-rays
TLDR
It is shown that the synchronization could be improved considerably by controlling the underlying ultrafast electron dynamics, to provide pulses of 130 attoseconds in duration, which would allow us to track fast electron processes in matter.
Attosecond science based on high harmonic generation from gases and solids
TLDR
The authors discuss recent development and future prospects of the generation of soft X-ray pulses from gases and solids and their potential applications in spectroscopy and ultrafast dynamics in atoms, molecules and other complex systems.
Attosecond metrology
TLDR
The demonstrated experimental tools and techniques open the door to attosecond spectroscopy of bound electrons by using a subfemtosecond soft-X-ray pulse and a few-cycle visible light pulse to trace electronic dynamics with a time resolution of ≤ 150 as.
Generation of attosecond x-ray pulses with a multi-cycle two-color ESASE scheme
Generation of attosecond x-ray pulses is attracting much attention within the x-ray free-electron laser (FEL) user community. Several schemes using extremely short laser pulses to manipulate the
Shaping electron-hole trajectories for solid-state high harmonic generation control.
TLDR
This work introduces a monolithic scheme in which the non-linear propagation is exploited to manipulate a two color driving field, as well as generate high harmonics within a single crystal, and shows that the resulting non-commensurate, bi-chromatic, generating field provides precise control over the periodicity of the HHG process.
High-harmonic generation from Bloch electrons in solids
We study the generation of high-harmonic radiation by Bloch electrons in a model transparent solid driven by a strong midinfrared laser field. We solve the single-electron time-dependent
...
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