Cord L. Arnold
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View article: Spatially dependent group delay dispersion from a diffraction grating and its application to the single-shot d-scan technique
Spatially dependent group delay dispersion from a diffraction grating and its application to the single-shot d-scan technique Open
Diffraction gratings are among the most fundamental optical elements. They are essential in ultrafast optics for manipulating the spectral phase of coherent ultrashort light pulses in grating stretchers, compressors, and 4 f pulse shapers.…
View article: Single-shot dispersion-scan using a combination of prism and grating
Single-shot dispersion-scan using a combination of prism and grating Open
The dispersion-scan technique (d-scan) is a well-established technique for the measurement of ultrashort laser pulses. While a single-shot version of d-scan is relatively easy to implement for sub-10 fs laser pulses, this becomes increasin…
View article: Spatially-dependent group delay dispersion from a diffraction grating and its application to the single-shot d-scan technique
Spatially-dependent group delay dispersion from a diffraction grating and its application to the single-shot d-scan technique Open
Diffraction gratings are among the most fundamental optical elements. They are essential in ultrafast optics for manipulating the spectral phase of coherent ultrashort light pulses in grating stretchers, compressors, and 4f pulse shapers. …
View article: Spatially-dependent group delay dispersion from a diffraction grating and its application to the single-shot d-scan technique
Spatially-dependent group delay dispersion from a diffraction grating and its application to the single-shot d-scan technique Open
Diffraction gratings are among the most fundamental optical elements. They are essential in ultrafast optics for manipulating the spectral phase of coherent ultrashort light pulses in grating stretchers, compressors, and 4f pulse shapers. …
View article: Influence of the laser pulse duration in high-order harmonic generation
Influence of the laser pulse duration in high-order harmonic generation Open
High-order harmonic generation (HHG) in gases has been studied for almost 40 years under many different conditions, varying the laser wavelength, intensity, focusing geometry, target design, gas species, etc. However, no systematic investi…
View article: Impact of oblique reflections on the generation of isolated attosecond pulses by polarization gating
Impact of oblique reflections on the generation of isolated attosecond pulses by polarization gating Open
Isolated attosecond pulses are often generated via sub-optical-cycle polarization gating. This technique, based on the precise control of the time-dependent polarization of the infrared driver pulse, enables strong temporal confinement of …
View article: Spatially-dependent group delay dispersion from a diffraction grating and its application to the single-shot d-scan technique
Spatially-dependent group delay dispersion from a diffraction grating and its application to the single-shot d-scan technique Open
Diffraction gratings are among the most fundamental optical elements. They are essential in ultrafast optics for manipulating the spectral phase of coherent ultrashort light pulses in grating stretchers, compressors, and 4f pulse shapers. …
View article: Spatially-dependent group delay dispersion from a diffraction grating and its application to the single-shot d-scan technique
Spatially-dependent group delay dispersion from a diffraction grating and its application to the single-shot d-scan technique Open
Diffraction gratings are among the most fundamental optical elements. They are essential in ultrafast optics for manipulating the spectral phase of coherent ultrashort light pulses in grating stretchers, compressors, and 4f pulse shapers. …
View article: Compact, intense attosecond sources driven by hollow Gaussian beams
Compact, intense attosecond sources driven by hollow Gaussian beams Open
High-order harmonic generation (HHG) enables the up-conversion of intense infrared or visible femtosecond laser pulses into extreme-ultraviolet attosecond pulses. However, the highly nonlinear nature of the process results in low conversio…
View article: Energy scaling in a compact bulk multi-pass cell enabled by Laguerre–Gaussian single-vortex beams
Energy scaling in a compact bulk multi-pass cell enabled by Laguerre–Gaussian single-vortex beams Open
We report pulse energy scaling enabled by the use of Laguerre–Gaussian single-vortex (LG0,l) beams for spectral broadening in a sub-40 cm long Herriott-type bulk multi-pass cell. Beams with orders l = 1–3 are generated using a spatial ligh…
View article: Influence of the laser pulse duration in high-order harmonic generation
Influence of the laser pulse duration in high-order harmonic generation Open
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 design, gas species, etc. However, no systematic investigat…
View article: Measuring the quantum state of photoelectrons
Measuring the quantum state of photoelectrons Open
A photoelectron, emitted due to the absorption of light quanta as described by the photoelectric effect, is often characterized experimentally by a classical quantity, its momentum. However, since the photoelectron is a quantum object, its…
View article: XUV yield optimization of two-color high-order harmonic generation in gases
XUV yield optimization of two-color high-order harmonic generation in gases Open
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 intensity of the second harmonic and its phase relative to the fund…
View article: Energy scaling in a compact bulk multi-pass cell enabled by Laguerre-Gaussian single-vortex beams
Energy scaling in a compact bulk multi-pass cell enabled by Laguerre-Gaussian single-vortex beams Open
We report pulse energy scaling enabled by the use of Laguerre-Gaussian single-vortex ($\text{LG}_{0,l}$) beams for spectral broadening in a sub-40 cm long Herriott-type bulk multi-pass cell. Beams with orders ${l= 1-3}$ are generated by a …
View article: Influence of final state interactions in attosecond photoelectron interferometry
Influence of final state interactions in attosecond photoelectron interferometry Open
Fano resonances are ubiquitous phenomena appearing in many fields of physics, e.g., atomic or molecular photoionization, or electron transport in quantum dots. Recently, attosecond interferometric techniques have been used to measure the a…
View article: XUV yield optimization of two-color high-order harmonic generation in gases
XUV yield optimization of two-color high-order harmonic generation in gases Open
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 intensity of the second harmonic and its phase relative to the fund…
View article: Compact, folded multi-pass cells for energy scaling of post-compression
Compact, folded multi-pass cells for energy scaling of post-compression Open
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 physics. A promising solution lies in post-compressed ytter…
View article: Isolated attosecond pulse generation in a semi-infinite gas cell driven by time-gated phase matching
Isolated attosecond pulse generation in a semi-infinite gas cell driven by time-gated phase matching Open
View article: Highly versatile, two-color setup for high-order harmonic generation using spatial light modulators
Highly versatile, two-color setup for high-order harmonic generation using spatial light modulators Open
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 interferometer arm contains a spatial light modulator with indi…
View article: The influence of final state interactions in attosecond photoelectron interferometry
The influence of final state interactions in attosecond photoelectron interferometry Open
Fano resonances are ubiquitous phenomena appearing in many fields of physics, e.g. atomic or molecular photoionization, or electron transport in quantum dots. Recently, attosecond interferometric techniques have been used to measure the am…
View article: Highly versatile, two-color setup for high-order harmonic generation using spatial light modulators
Highly versatile, two-color setup for high-order harmonic generation using spatial light modulators Open
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 interferometer arm contains a spatial light modulator, with in…
View article: Time‐Resolved Photoemission Electron Microscopy on a ZnO Surface Using an Extreme Ultraviolet Attosecond Pulse Pair (Adv. Phys. Res. 3/2024)
Time‐Resolved Photoemission Electron Microscopy on a ZnO Surface Using an Extreme Ultraviolet Attosecond Pulse Pair (Adv. Phys. Res. 3/2024) Open
View article: Measurement of ultrashort laser pulses with a time-dependent polarization state using the d-scan technique
Measurement of ultrashort laser pulses with a time-dependent polarization state using the d-scan technique Open
The dispersion scan (d-scan) technique is extended to measurement of the time-dependent polarization state of ultrashort laser pulses. In the simplest implementation for linearly polarized ultrashort pulses, the d-scan technique records th…
View article: Spatial Aberrations in High-Order Harmonic Generation
Spatial Aberrations in High-Order Harmonic Generation Open
We investigate the spatial characteristics of high-order harmonic radiation generated in argon and observe cross-like patterns in the far field. An analytical model describing harmonics from an astigmatic driving beam reveals that these pa…
View article: Time‐Resolved Photoemission Electron Microscopy on a ZnO Surface Using an Extreme Ultraviolet Attosecond Pulse Pair
Time‐Resolved Photoemission Electron Microscopy on a ZnO Surface Using an Extreme Ultraviolet Attosecond Pulse Pair Open
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 orbitals. As a result, it is possible to probe the emissio…
View article: Time-resolved photoemission electron microscopy on a ZnO surface using an extreme ultraviolet attosecond pulse pair
Time-resolved photoemission electron microscopy on a ZnO surface using an extreme ultraviolet attosecond pulse pair Open
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 orbitals. As a result, it is possible to probe the emissio…
View article: Measuring the quantum state of photoelectrons
Measuring the quantum state of photoelectrons Open
A photoelectron, emitted due to the absorption of light quanta as described by the photoelectric effect, is often characterized experimentally by a classical quantity, its momentum. However, since the photoelectron is a quantum object, its…
View article: Ultra-stable and versatile high-energy resolution setup for attosecond photoelectron spectroscopy
Ultra-stable and versatile high-energy resolution setup for attosecond photoelectron spectroscopy Open
Attosecond photoelectron spectroscopy has opened up for studying light–matter interaction on ultrafast time scales. It is often performed with interferometric experimental setups that require outstanding stability. We demonstrate and chara…
View article: Measurement of Ultrashort Laser Pulses With a Time-Dependent Polarization State Using the D-Scan Technique
Measurement of Ultrashort Laser Pulses With a Time-Dependent Polarization State Using the D-Scan Technique Open
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 polarized ultrashort pulses, the d-scan technique records the…
View article: Single-shot, high-repetition rate carrier-envelope-phase detection of ultrashort laser pulses
Single-shot, high-repetition rate carrier-envelope-phase detection of ultrashort laser pulses Open
We propose a single-shot, high-repetition rate measurement scheme of the carrier-envelope phase offset of ultrashort laser pulses. The spectral fringes resulting from f-2f nonlinear interferometry, encoding the carrier-envelope-phase, are …