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J. Rothhardt · SciRah

Researcher profile · Semantic Scholar

J. Rothhardt

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J. Rothhardt — researcher profile on SciRah

h-index: 42
Works: 295
Citations: 5,380

Most-cited papers

Ultra-short-pulse high-average-power megahertz-repetition-rate coherent extreme-ultraviolet light source
R. Klas, A. Kirsche, M. Gebhardt, J. Buldt +4 more
202088 citations Open access
Semantic Scholar
Material-specific high-resolution table-top extreme ultraviolet microscopy
W. Eschen, L. Loetgering, V. Schuster, R. Klas +8 more
2021Light: Science & Applications86 citations Open access
Semantic Scholar
Bright, high-repetition-rate water window soft X-ray source enabled by nonlinear pulse self-compression in an antiresonant hollow-core fibre
M. Gebhardt, Tobias Heuermann, R. Klas, Chang Liu +9 more
2020Light: Science & Applications51 citations Open access
Semantic Scholar
Visualizing the ultra-structure of microorganisms using table-top extreme ultraviolet imaging
Chang Liu, W. Eschen, L. Loetgering, D. P. Penagos Molina +9 more
2022PhotoniX37 citations Open access
Semantic Scholar
Advances in laboratory-scale ptychography using high harmonic sources [Invited].
Lars Loetgering, S. Witte, J. Rothhardt
2021Optics Express37 citations Open access
Semantic Scholar
Generation of coherent broadband high photon flux continua in the XUV with a sub-two-cycle fiber laser.
R. Klas, W. Eschen, A. Kirsche, J. Rothhardt +1 more
2020Optics Express33 citations Open access
Semantic Scholar
PtyLab.m/py/jl: a cross-platform, open-source inverse modeling toolbox for conventional and Fourier ptychography.
L. Loetgering, Meng-Qi Du, D. Boonzajer Flaes, Tomas Aidukas +10 more
2023Optics Express23 citations Open access
Semantic Scholar
Structured illumination ptychography and at-wavelength characterization with an EUV diffuser at 13.5 nm wavelength.
W. Eschen, Chang Liu, M. Steinert, D. P. Penagos Molina +6 more
2023Optics Express15 citations Open access
Semantic Scholar
Ultraviolet dual comb spectroscopy: a roadmap.
V. Schuster, Chang Liu, R. Klas, P. Domínguez +3 more
2020Optics Express15 citations Open access
Semantic Scholar
Coherent nanoscale imaging and chemical mapping with compact extreme ultraviolet and soft x-ray sources: Review and perspective
W. Eschen, R. Klas, D. P. Penagos Molina, S. Fuchs +3 more
2025APL Photonics14 citations Open access
Semantic Scholar
Continuously tunable high photon flux high harmonic source.
A. Kirsche, M. Gebhardt, R. Klas, Lucas Eisenbach +5 more
2022Optics Express13 citations Open access
Semantic Scholar
Broadband holography-assisted coherent imaging -- towards attosecond imaging at the nanoscale
W. Eschen, Sici Wang, Chang Liu, M. Steinert +6 more
202013 citations Open access
Semantic Scholar
High-speed and wide-field nanoscale table-top ptychographic EUV imaging and beam characterization with a sCMOS detector.
W. Eschen, Chang Liu, D. P. Penagos Molina, R. Klas +2 more
2023Optics Express12 citations Open access
Semantic Scholar
Nonlinear pulse compression to 51-W average power GW-class 35-fs pulses at 2-µm wavelength in a gas-filled multi-pass cell.
P. Gierschke, C. Grebing, M. Abdelaal, M. Lenski +7 more
2022Optics Letters12 citations
Semantic Scholar
A compact, turnkey, narrow-bandwidth, tunable, and high-photon-flux extreme ultraviolet source
V. Hilbert, M. Tschernajew, R. Klas, J. Limpert +1 more
202012 citations Open access
Semantic Scholar
Nonlinear pulse compression to sub-two-cycle, 1.3 mJ pulses at 1.9 μm wavelength with 132 W average power.
Zi-Yao Wang, T. Heuermann, M. Gebhardt, M. Lenski +5 more
2023Optics Letters11 citations
Semantic Scholar
Bayesian multi-exposure image fusion for robust high dynamic range ptychography.
Shantanu Kodgirwar, L. Loetgering, Chang Liu, Aleena Joseph +5 more
2024Optics Express9 citations Open access
Semantic Scholar
Real-time phase-retrieval and wavefront sensing enabled by an artificial neural network.
Jonathon White, Sici Wang, W. Eschen, J. Rothhardt
2021Optics Express9 citations Open access
Semantic Scholar
Lifetime measurements of ultrashort‐lived excited states in Be‐like ions
J. Rothhardt, M. Bilal, R. Beerwerth, A. Volotka +4 more
2019X-Ray Spectrometry9 citations
Semantic Scholar
22-W average power high pulse energy multipass-cell-based post-compression in the green spectral range.
Maximilian Karst, Pauline Pfaller, R. Klas, Zi-Yao Wang +3 more
2023Optics Letters7 citations
Semantic Scholar
Towards attosecond imaging at the nanoscale using broadband holography-assisted coherent imaging in the extreme ultraviolet
W. Eschen, Sici Wang, Chang Liu, R. Klas +7 more
2021Communications Physics7 citations Open access
Semantic Scholar
High repetition rate high harmonic generation with ultra-high photon flux
M. Tschernajew, S. Hädrich, R. Klas, M. Gebhardt +7 more
20202021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)7 citations
Semantic Scholar
Multiplexing information limits in multi-beam ptychography.
D. P. Penagos Molina, W. Eschen, Chang Liu, J. Limpert +1 more
2025Optics Express5 citations Open access
Semantic Scholar
Agile spectral tuning of high order harmonics by interference of two driving pulses.
V. Schuster, V. Hilbert, R. Klas, Chang Liu +4 more
2021Optics Express5 citations Open access
Semantic Scholar
Table-top interferometry on extreme time and wavelength scales.
S. Skruszewicz, A. Przystawik, David Schwickert, Malte Sumfleth +11 more
2021Optics Express5 citations Open access
Semantic Scholar
ptyLab: a cross-platform inverse modeling toolbox for conventional and Fourier ptychography
Lars Loetgering, Tomas Aidukas, Meng-Qi Du, D. B. Flaes +10 more
2021OSA Imaging and Applied Optics Congress 2021 (3D, COSI, DH, ISA, pcAOP)5 citations
Semantic Scholar
Reliability of ptychography on periodic structures
F. Tuitje, W. Eschen, G. K. Tadesse, J. Limpert +2 more
20205 citations Open access
Semantic Scholar
Broadband ptychography using curved wavefront illumination.
D. P. Penagos Molina, L. Loetgering, W. Eschen, J. Limpert +1 more
2023Optics Express4 citations Open access
Semantic Scholar
Critical Laser Intensity of Phase-Matched High-Order Harmonic Generation in Noble Gases
Bjorn Minneker, R. Klas, J. Rothhardt, S. Fritzsche
2022Photonics4 citations Open access
Semantic Scholar
Bright, high-repetition-rate water window soft X-ray source enabled by nonlinear pulse self-compression in an antiresonant hollow-core fibre
M. Gebhardt, T. Heuermann, R. Klas, C. Liu +9 more
2021Light: Science & Applications4 citations Open access
Semantic Scholar
Purity-based self-calibration in ptychography.
Chang Liu, W. Eschen, D. P. Penagos Molina, Leona Licht +2 more
2025Optics Letters3 citations Open access
Semantic Scholar
Dose constraints for high-resolution imaging of biological specimens with extreme ultraviolet and soft X-ray radiation.
Chang Liu, Leona Licht, J. Rothhardt
2025Ultramicroscopy3 citations Open access
Semantic Scholar
Unleashing HHG efficiency: the role of driving pulse duration
R. Klas, M. Gebhardt, J. Rothhardt, J. Limpert
2025PhotoniX3 citations Open access
Semantic Scholar
4-channel Coherently Combined Long-term-stable Ultrafast Thulium-doped Fiber CPA
C. Gaida, F. Stutzki, M. Gebhardt, T. Heuermann +4 more
20202021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)3 citations
Semantic Scholar
Soft x-ray high order harmonic generation driven by high repetition rate ultrafast thulium-doped fiber lasers
M. Gebhardt, T. Heuermann, Zi-Yao Wang, M. Lenski +6 more
2020LASE3 citations
Semantic Scholar
High-precision calculations of the 1s22s2p P11→1s22s2 S01 spin-allowed E1 transition in C iii
M. Bilal, A. Volotka, R. Beerwerth, J. Rothhardt +2 more
2019Physical Review A3 citations Open access
Semantic Scholar
Single-frame randomized probe imaging in the EUV using a high-order harmonic source.
S. Chew, W. Eschen, Chang Liu, M. Abdelaal +2 more
2025Optics Express2 citations Open access
Semantic Scholar
Coincidence measurement of two-photon double ionization of argon through an autoionizing resonance
Sebastian Hell, Julian Spathe, M. Førre, R. Klas +7 more
20252 citations
Semantic Scholar
Quantitative EUV ptychography reveals nanoscale morphological responses of bacteria under physiological and antibiotic stress
Chang Liu, Leona Licht, C. Wichmann, W. Eschen +6 more
2025PhotoniX2 citations Open access
Semantic Scholar
Laser-driven high-flux source of coherent quasi-monochromatic extreme ultraviolet radiation for coincidence spectroscopy.
Julian Spathe, Sebastian Hell, M. Wünsche, R. Klas +5 more
2025Review of Scientific Instruments2 citations
Semantic Scholar
Structured illumination microscopy with extreme ultraviolet pulses.
R. Mincigrucci, E. Paltanin, J. Pelli-Cresi, F. Gala +14 more
2024Optics Express2 citations Open access
Semantic Scholar
Multipass cell post-compression at 515 nm as an efficient driver for a table-top 13.5 nm source
Maximilian Karst, Pauline Pfaller, R. Klas, M. Abdelaal +3 more
2023EPJ Web of Conferences2 citations Open access
Semantic Scholar
Material-specific high-resolution table-top extreme ultraviolet microscopy
W. Eschen, L. Loetgering, V. Schuster, R. Klas +8 more
2022Light: Science & Applications2 citations Open access
Semantic Scholar
Ultra-short-pulse high-average-power megahertz-repetition-rate coherent extreme-ultraviolet light source
R. Klas, A. Kirsche, M. Gebhardt, J. Buldt +4 more
2021PhotoniX2 citations Open access
Semantic Scholar
Differential pumping unit for windowless coupling of laser beams to ultra high vacuum
M. Tschernajew, P. Gierschke, Hai-Feng Lin, V. Hilbert +4 more
20202 citations
Semantic Scholar
Single-shot characterization of strongly focused coherent XUV and soft X-ray beams.
W. Eschen, G. K. Tadesse, Yu-Fei Peng, M. Steinert +3 more
2020Optics Letters2 citations
Semantic Scholar
Design strategies for efficient, fabrication-feasible extreme-ultraviolet metalens
Hei-Lam Shiu, U. A. Patro, J. Rothhardt, T. Pertsch
20261 citations
Semantic Scholar
High Average Power High-Harmonic EUV Sources and High Performance Imaging at the Nanoscale
J. Limpert, J. Rothhardt
2024EPJ Web of Conferences1 citations Open access
Semantic Scholar
EUV ptychography: material-specific imaging at the nanoscale
J. Rothhardt, W. Eschen, Cheng Liu, Daniel S. Penagos M. +2 more
2023Optical Metrology1 citations
Semantic Scholar
Ultrafast HHG source delivering 13 mW of average power
R. Klas, A. Kirsche, M. Gebhardt, J. Buldt +4 more
2022Optica High-brightness Sources and Light-driven Interactions Congress 20221 citations
Semantic Scholar

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R. Klas×27
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J. Limpert×24
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W. Eschen×22
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Chang Liu×14
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V. Hilbert — researcher profile on SciRah