Generation of Super Intense Isolated Attosecond Pulses from Trapped
Electrons in Metal Surfaces
- URL: http://arxiv.org/abs/2203.12061v1
- Date: Tue, 22 Mar 2022 21:46:30 GMT
- Title: Generation of Super Intense Isolated Attosecond Pulses from Trapped
Electrons in Metal Surfaces
- Authors: Younes Adnani, Abdelmalek Taoutioui, Abdelkader Makhoute, K\'aroly
T\"ok\'esi and Hicham Agueny
- Abstract summary: Generation of ultrabroadband isolated attosecond pulses (IAPs) is essential for time-resolved applications in chemical and material sciences.
We propose a numerical scheme for highly efficient high-order harmonic generation (HHG) and hence the generation of ultrabroadband IAPs in the XUV and soft x-ray regions.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Generation of ultrabroadband isolated attosecond pulses (IAPs) is essential
for time-resolved applications in chemical and material sciences, as they have
the potential to access the spectral water window region of chemical elements,
which yet has to be established. Here we propose a numerical scheme for highly
efficient high-order harmonic generation (HHG) and hence the generation of
ultrabroadband IAPs in the XUV and soft x-ray regions. The scheme combines the
use of chirped pulses with trapped electrons in copper transition-metal
surfaces and takes advantage of the characteristic features of an infrared (IR)
single-cycle pulse to achieve high conversion efficiencies and large spectral
bandwidths. In particular, we show that ultrabroad IAPs with a duration of 370
as and with a bandwidth covering the photon energy range of 50-250 and 350-450
eV can be produced. We further show that introducing an additional IR single
cycle pulse permits to enhance the harmonic yield in the soft x-ray photon
energy region by almost 7 order of magnitude. Our findings thus elucidate the
relevance of trapped electrons in metal surfaces for developing stable and
highly efficient attosecond light sources in compact solid-state devices.
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