Extreme-ultraviolet high-order harmonic generation from few-cycle annular beams

Gaumnitz, Thomas; Jain, Arohi; Wörner, Hans Jakob

doi:10.1364/ol.43.004506

Cited by 13 publications

(11 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The noncollinear HHG is a well-accepted scheme that gives additional controllability on wavefront, − , polarization, ,, and spectrum especially in gaseous atomic medium. The similar approach is the HHG using an annular driver to separate driver while keeping radial symmetry of the harmonic beams. − Meanwhile, the noncollinear scheme has not been introduced to this recent field of solid HHG, so in-depth understanding on its key advantages has not been addressed to date. In this study, we devised a common-optic setup mediating wavefront control of the EUV high-harmonics from a solid medium.…”

Section: Resultsmentioning

confidence: 99%

Coherent Manipulation of Extreme-Ultraviolet Bessel Vortex Beams from Solids by Active Wavefront Shaping of Driving Fundamental Beams

Kim,

Choi,

Won

et al. 2023

ACS Photonics

View full text Add to dashboard Cite

High-harmonic generation (HHG) of extreme ultraviolet (EUV) radiation enables ultrafast spectroscopy and nanoscale coherent imaging with timing resolutions down to the attosecond regime. However, beam manipulations such as steering and focusing remain a major challenge for handy implementation of such applications toward the achievement of a wavelength-scale spatial resolution. Here, we present a solid-based noncollinear HHG scheme mediating the propagation control and helical wavefront generation commanded via a spatial light modulator. The coherent multifold conversion of wavefronts in HHG enabled active control of the EUV harmonic beam propagation. Further, EUV harmonics generated by double-annular beams were converted to the Bessel vortex beam, for the first time, narrowing the beam diameter to 3.4 wavelengths with a long millimeter-level depth-of-focus without extra EUV-dedicated optical components. Our results will suggest the wavefront manipulation of the fundamental beam in HHG as a powerful tool for beam shaping of high photon-energy applications with a nanoscale spatial resolution.

show abstract

Section: Resultsmentioning

confidence: 99%

Coherent Manipulation of Extreme-Ultraviolet Bessel Vortex Beams from Solids by Active Wavefront Shaping of Driving Fundamental Beams

Kim,

Choi,

Won

et al. 2023

ACS Photonics

View full text Add to dashboard Cite

show abstract

“…These foils, however, are notoriously fragile and cannot handle the high average power present in high-repetition-rate, high-pulse-energy laser systems. Annular beams can be used to generate spatially separated XUV and IR pulses [33], but masks used to block out the central areas of the generating beam also suffer from damage-threshold issues with highaverage-power systems and drilled mirrors are costly and sacrifice generating power required for the HHG process.…”

Section: Resultsmentioning

confidence: 99%

Reconstruction of attosecond pulses in the presence of interfering dressing fields using a 100 kHz laser system at ELI-ALPS

Hammerland

Zhang

Kühn

et al. 2019

J. Phys. B: At. Mol. Opt. Phys.

Self Cite

View full text Add to dashboard Cite

Attosecond Pulse Trains (APT) generated by high-harmonic generation (HHG) of high-intensity near-infrared (IR) laser pulses have proven valuable for studying the electronic dynamics of atomic and molecular species. However, the high intensities required for high-photon-energy, high-flux HHG usually limit the class of adequate laser systems to repetition rates below 10 kHz. Here, APT's generated from the 100 kHz, 160 W, 40 fs laser system (HR1) of the Extreme Light Infrastructure Attosecond Light Pulse Source (ELI-ALPS) are reconstructed using the Reconstruction of Attosecond Beating By Interference of two-photon Transitions (RABBIT) technique. These experiments constitute the first attosecond time-resolved photoelectron spectroscopy measurements performed at 100 kHz repetition rate and the first attosecond experiments performed at ELI-ALPS. These RABBIT measurements were taken with an additional IR field temporally locked to the extremeultraviolet APT, resulting in an atypical ω beating. We show that the phase of the 2ω beating recorded under these conditions is strictly identical to that observed in standard RABBIT measurements within second-order perturbation theory. This work highlights an experimental simplification for future experiments based on attosecond interferometry (or RABBIT), which is particularly useful when lasers with high average powers are used.

show abstract

“…However, with the increase of laser power, this portion will become stronger and it must be considered. In the high-repetition rate regime of ~100 kHz, several laboratories have used annular laser beams to generate high-order harmonics [27,70], while the measurement of the attosecond temporal duration was only reported in our previous work at ELI-ALPS [52].…”

Section: Generation Beam (Xuv Arm)mentioning

confidence: 99%

High-Flux 100 kHz Attosecond Pulse Source Driven by a High-Average Power Annular Laser Beam

Oldal

Csizmadia

et al. 2022

Ultrafast Sci

View full text Add to dashboard Cite

High-repetition rate attosecond pulse sources are indispensable tools for time-resolved studies of electron dynamics, such as coincidence spectroscopy and experiments with high demands on statistics or signal-to-noise ratio, especially in the case of solid and big molecule samples in chemistry and biology. Although with the high-repetition rate lasers, such attosecond pulses in a pump-probe configuration are possible to achieve, until now, only a few such light sources have been demonstrated. Here, by shaping the driving laser to an annular beam, a 100 kHz attosecond pulse train (APT) is reported with the highest energy so far (51 pJ/shot) on target (269 pJ at generation) among the high-repetition rate systems (>10 kHz) in which the attosecond pulses were temporally characterized. The on-target pulse energy is maximized by reducing the losses from the reflections and filtering of the high harmonics, and an unprecedented 19% transmission rate from the generation point to the target position is achieved. At the same time, the probe beam is also annular and low loss of this beam is reached by using another holey mirror to combine with the APT. The advantages of using an annular beam to generate attosecond pulses with a high-average power laser are demonstrated experimentally and theoretically. The effect of nonlinear propagation in the generation medium on the annular-beam generation concept is also analyzed in detail.

show abstract

Extreme-ultraviolet high-order harmonic generation from few-cycle annular beams

Cited by 13 publications

References 33 publications

Coherent Manipulation of Extreme-Ultraviolet Bessel Vortex Beams from Solids by Active Wavefront Shaping of Driving Fundamental Beams

Coherent Manipulation of Extreme-Ultraviolet Bessel Vortex Beams from Solids by Active Wavefront Shaping of Driving Fundamental Beams

Reconstruction of attosecond pulses in the presence of interfering dressing fields using a 100 kHz laser system at ELI-ALPS

High-Flux 100 kHz Attosecond Pulse Source Driven by a High-Average Power Annular Laser Beam

Contact Info

Product

Resources

About