43 citations · 136 across the 16 of their papers we have counts for
19 papers
Phase-locked beam splitting with continuously tunable intensity ratio using stochastic phase masks
Melvin Redon, Titouan Gadeyne, Gaspard Beaufort +6
We introduce a common-path beam splitter based on a randomly partitioned phase mask displayed on a spatial light modulator (SLM). The SLM aperture is divided into square patches, e…
Phase-matching in high-order harmonic generation with a plasma-reshaped driving field
Gaspard Beaufort, Venus Poulain, Melvin Redon +13
The transition from titanium-sapphire to ytterbium-based laser technology enables turnkey implementations of high-order harmonic generation (HHG) setups at high repetition rates, o…
Near single-cycle pulse generation using a cascaded all-bulk multi-pass cell compression system
Saga Westerberg, Gaspard Beaufort, Sara Rushe Palacios +5
We experimentally demonstrate the generation of sub-two-cycle optical pulses using a cascaded post-compression scheme based on two bulk multi-pass cells. Starting from 220 fs, 100…
Roadmap on Attosecond Science
Rocio Borrego Varillas, Pierre Agostini, Fernando Ardana-Lamas +108
Twenty-five years have passed since the first experimental demonstration of attosecond pulses, marking the advent of our ability to resolve and control electron motion in real time…
Towards direct nonlinear compression of energetic sub-nanosecond pulses to the ultrafast regime
Gaspard Beaufort, Nayla Jimenez, Gunnar Arisholm +5
Applications of terawatt-class lasers can enormously benefit from pulse trains with kHz repetition rates. The associated unprecedented combinations of peak and average powers requi…
Compact, intense attosecond sources driven by hollow Gaussian beams
Rodrigo Martín-Hernández, Melvin Redon, Ann-Kathrin Raab +9
High-order harmonic generation (HHG) enables the up-conversion of intense infrared or visible femtosecond laser pulses into extreme-ultraviolet attosecond pulses. However, the high…
Influence of the laser pulse duration in high-order harmonic generation
Saga Westerberg, Melvin Redon, Ann-Kathrin Raab +10
High-order harmonic generation (HHG) in gases has been studied for almost 40 years in many different conditions, varying the laser wavelength, intensity, focusing geometry, target…
Energy scaling in a compact bulk multi-pass cell enabled by Laguerre-Gaussian single-vortex beams
Victor Koltalo, Saga Westerberg, Melvin Redon +5
We report pulse energy scaling enabled by the use of Laguerre-Gaussian single-vortex () beams for spectral broadening in a sub-40 cm long Herriott-type bulk multi-…
XUV yield optimization of two-color high-order harmonic generation in gases
Ann-Kathrin Raab, Melvin Redon, Sylvianne Roscam Abbing +7
We perform an experimental two-color high-order harmonic generation study in argon with the fundamental of an ytterbium ultrashort pulse laser and its second harmonic. The intensit…
Compact, folded multi-pass cells for energy scaling of post-compression
Arthur Schönberg, Supriya Rajhans, Esmerando Escoto +12
Combining high peak and high average power has long been a key challenge of ultrafast laser technology, crucial for applications such as laser-plasma acceleration and strong-field…
Highly versatile, two-color setup for high-order harmonic generation using spatial light modulators
Ann-Kathrin Raab, Marvin Schmoll, Emma R. Simpson +7
We present a novel, interferometric, two-color, high-order harmonic generation setup, based on a turn-key Ytterbium-doped femtosecond laser source and its second harmonic. Each int…
Time-resolved photoemission electron microscopy on a ZnO surface using an extreme ultraviolet attosecond pulse pair
Jan Vogelsang, Lukas Wittenbecher, Sara Mikaelsson +6
Electrons photoemitted by extreme ultraviolet attosecond pulses derive spatially from the first few atomic surface layers and energetically from the valence band and highest atomic…
Measurement of Ultrashort Laser Pulses With a Time-Dependent Polarization State Using the D-Scan Technique
Daniel Diaz Rivas, Ann-Kathrin Raab, Chen Guo +4
The dispersion scan (d-scan) technique is extended to measurement of the timedependent polarization state of ultrashort laser pulses. In the simplest implementation for linearly po…
Few-cycle pulse generation by double-stage hybrid multi-pass multi-plate nonlinear pulse compression
Anne-Lise Viotti, Chen Li, Gunnar Arisholm +4
Few-cycle pulses present an essential tool to track ultrafast dynamics in matter and drive strong field effects. To address photon-hungry applications, high average power lasers ar…
Multi-gigawatt peak power post-compression in a bulk multi-pass cell at high repetition rate
Ann-Kathrin Raab, Marcus Seidel, Chen Guo +5
The output of a 200 kHz, 34 W, 300 fs Yb amplifier is compressed to 31 fs with > 88 % efficiency to reach a peak power of 2.5 GW, which to date is a record for a single-stage bulk…
Temporal quality of post-compressed pulses at large compression factors
Esmerando Escoto, Anne-Lise Viotti, Skirmantas Alisauskas +3
Post-compression of ultra-short laser pulses via self-phase modulation is routinely employed for the generation of laser pulses with optical bandwidths reaching far beyond the lase…
Characterizing ultrashort laser pulses with second harmonic dispersion scans
Ivan Sytcevich, Chen Guo, Sara Mikaelsson +9
The dispersion scan (d-scan) technique has emerged as a simple-to-implement characterization method for ultrashort laser pulses. D-scan traces are intuitive to interpret and retrie…
A high-repetition rate attosecond light source for time-resolved coincidencespectroscopy
Sara Mikaelsson, Jan Vogelsang, Chen Guo +12
Attosecond pulses, produced through high-order harmonic generation in gases, have been successfully used for observing ultrafast, sub-femtosecond electron dynamics in atoms, molecu…
Post-compression of picosecond pulses into the few-cycle regime
Prannay Balla, Ammar Bin Wahid, Ivan Sytcevich +18
In this work, we demonstrate post-compression of 1.2 picosecond laser pulses to 13 fs via gas-based multi-pass spectral broadening. Our results yield a single-stage compression fac…