Advances in laboratory-scale ptychography using high harmonic sources

L Loetgering, S Witte, J Rothhardt - Optics Express, 2022 - opg.optica.org
Extreme ultraviolet microscopy and wavefront sensing are key elements for next-generation
ultrafast applications, such as chemically-resolved imaging, focal spot diagnostics in pump …

Single-shot lensless imaging with fresnel zone aperture and incoherent illumination

J Wu, H Zhang, W Zhang, G Jin, L Cao… - Light: Science & …, 2020 - nature.com
Lensless imaging eliminates the need for geometric isomorphism between a scene and an
image while allowing the construction of compact, lightweight imaging systems. However, a …

Experimental control of quantum-mechanical entanglement in an attosecond pump-probe experiment

LM Koll, L Maikowski, L Drescher, T Witting… - Physical Review Letters, 2022 - APS
Entanglement is one of the most intriguing aspects of quantum mechanics and lies at the
heart of the ongoing second quantum revolution, where it is a resource that is used in …

Ultra-simplified diffraction-based computational spectrometer

C Chen, H Gu, S Liu - Light: Science & Applications, 2024 - nature.com
Miniaturizing spectrometers for compact and cost-effective mobile platforms is a major
challenge in current spectroscopy research, where conventional spectrometers are …

Nanoscale magnetic imaging using circularly polarized high-harmonic radiation

O Kfir, S Zayko, C Nolte, M Sivis, M Möller, B Hebler… - Science …, 2017 - science.org
This work demonstrates nanoscale magnetic imaging using bright circularly polarized high-
harmonic radiation. We utilize the magneto-optical contrast of worm-like magnetic domains …

Broadband coherent diffractive imaging

J Huijts, S Fernandez, D Gauthier, M Kholodtsova… - Nature …, 2020 - nature.com
Recent technological advances in attosecond science hold the promise of tracking
electronic processes at the shortest space and time scales. However, the necessary imaging …

Tailoring spatial entropy in extreme ultraviolet focused beams for multispectral ptychography

L Loetgering, X Liu, ACC De Beurs, M Du, G Kuijper… - Optica, 2021 - opg.optica.org
Diffractive optics can be used to accurately control optical wavefronts, even in situations
where refractive components such as lenses are not available. For instance, conventional …

Extreme-ultraviolet shaping and imaging by high-harmonic generation from nanostructured silica

SDC Roscam Abbing, R Kolkowski, ZY Zhang… - Physical review …, 2022 - APS
Coherent extreme-ultraviolet pulses from high-harmonic generation have ample
applications in attosecond science, lensless imaging, and industrial metrology. However …

Divergence and efficiency optimization in polarization-controlled two-color high-harmonic generation

SDC Roscam Abbing, F Campi, A Zeltsi… - Scientific Reports, 2021 - nature.com
Improving the brightness of high-harmonic generation (HHG) sources is one of the major
goals for next-generation ultrafast, imaging and metrology applications in the extreme …

Improved quantitative phase imaging in lensless microscopy by single-shot multi-wavelength illumination using a fast convergence algorithm

M Sanz, JA Picazo-Bueno, J García, V Micó - Optics Express, 2015 - opg.optica.org
We report on a novel algorithm for high-resolution quantitative phase imaging in a new
concept of lensless holographic microscope based on single-shot multi-wavelength …