Dr. Jan Rothhardt Profile

Dr. Jan Rothhardt

Ph.D. Student/Staff Member of IAP at Helmholtz Institute Jena

SPIE Involvement:

Author

Publications (27)

Proceedings Article | 13 March 2024 Poster + Paper

Correlative extreme ultraviolet, visible, infrared, and fluorescence microscopy in a single lensless imaging setup

L. Licht, C. Liu, W. Eschen, D. Penagos Molina, J. Reinhard, S. Kaleta, J. Limpert, C. Eggeling, J. Rothhardt

Proceedings Volume 12857, 128570I (2024) https://doi.org/10.1117/12.3002264

KEYWORDS: Extreme ultraviolet, Fluorescence, Infrared imaging, Biological samples, Fluorescence microscopy, Biological imaging, Light sources and illumination, Microscopy, Image resolution, Visible radiation

Read Abstract +

Proceedings Article | 9 August 2023 Paper

EUV ptychography: material-specific imaging at the nanoscale

J. Rothhardt, Wilhelm Eschen, Cheng Liu, Daniel Penagos M., Robert Klas, Jens Limpert

Proceedings Volume 12621, 126210V (2023) https://doi.org/10.1117/12.2678398

KEYWORDS: Extreme ultraviolet, Scattering, Biological samples, Biological imaging, Microscopes, Silicon, Integrated circuits, Chemical composition, Stars, Semiconductors

Read Abstract +

Proceedings Article | 11 November 2022 Presentation

Material-specific high-resolution extreme ultraviolet microscopy using a high-order harmonic source

Wilhelm Eschen, Lars Loetgering, Vittoria Schuster, Robert Klas, Alexander Kirsche, Lutz Berthold, Michael Steinert, Thomas Pertsch, Michael Krause, Jens Limpert, Jan Rothhardt

Proceedings Volume PC12292, PC122920O (2022) https://doi.org/10.1117/12.2641705

KEYWORDS: Extreme ultraviolet, Microscopy, Ultraviolet radiation, Stars, Silicon, Silica, Scattering, Refractive index, Microscopes, Metrology

Read Abstract +

Proceedings Article | 4 March 2022 Presentation

200 W average power, ultrafast fiber CPA with 400 µJ pulse energy at 2 µm central wavelength

Christian Gaida, Fabian Stutzki, Martin Gebhardt, Tobias Heuermann, Sven Breitkopf, Oliver Herrfurth, Jan Rothhardt, Tino Eidam, Jens Limpert

Proceedings Volume PC11980, PC1198006 (2022) https://doi.org/10.1117/12.2608635

KEYWORDS: Ultrafast phenomena, Ultrafast lasers, Laser systems engineering, High power lasers, Semiconductor lasers, Mid-IR, Laser applications, Fiber lasers, Fiber amplifiers, Diodes

Read Abstract +

Proceedings Article | 5 March 2021 Presentation

Long-term stable 120W fiber CPA with 1.3GW peak power at 2µm

Christian Gaida, Fabian Stutzki, Martin Gebhardt, Tobias Heuermann, Sven Breitkopf, Jan Rothhardt, Tino Eidam, Jens Limpert

Proceedings Volume 11676, 116760N (2021) https://doi.org/10.1117/12.2577478

KEYWORDS: Laser systems engineering, Pulsed laser operation, Laser stabilization, High power lasers, Energy efficiency, Ultrafast lasers, Thulium, Laser applications, Fiber lasers, Fiber amplifiers

Read Abstract +

Proceedings Article | 5 March 2021 Presentation

High repetition rate high harmonic generation with ultra-high photon flux

Maxim Tschernajew, Steffen Haedrich, Robert Klas, Martin Gebhardt, Roland Horsten, Sven Weerdenburg, Sergey Pyatchenkov, Wim Coene, Christian Gaida, Sven Breitkopf, Jan Rothhardt, Tino Eidam, Jens Limpert

Proceedings Volume 11676, 116761C (2021) https://doi.org/10.1117/12.2577496

KEYWORDS: High harmonic generation, Coherence imaging, X-rays, Ultrafast phenomena, Statistical analysis, Laser applications, Fiber lasers, Extreme ultraviolet

Read Abstract +

Proceedings Article | 5 March 2021 Presentation + Paper

High repetition rate high-order harmonic generation up to the carbon K-edge in an antiresonant hollow-core fiber

Martin Gebhardt, Tobias Heuermann, Robert Klas, Alexander Kirsche, Chang Liu, Ziyao Wang, Mathias Lenski, Christian Gaida, Cesar Jauregui, Jose Antonio-Lopez, Axel Schülzgen, Rodrigo Amezcua-Correa, Jan Rothhardt, Jens Limpert

Proceedings Volume 11676, 116761D (2021) https://doi.org/10.1117/12.2578529

KEYWORDS: Carbon, X-rays, High harmonic generation, Ultrafast phenomena, Ultrafast laser spectroscopy, Spectroscopy, Fiber lasers, Coherence imaging, Absorption spectroscopy, X-ray sources

Read Abstract +

Proceedings Article | 5 March 2021 Paper

Ultrafast nanoscale XUV table-top coherent diffractive imaging

Wilhelm Eschen, Vittoria Schuster, Sici Wang, Lars Loetgering, Chang Liu, Robert Klas, Jens Limpert, Jan Rothhardt

Proceedings Volume 11676, 116761B (2021) https://doi.org/10.1117/12.2578527

KEYWORDS: Coherence imaging, Extreme ultraviolet, Ultrafast imaging, Synchrotrons, Spatial resolution, Photomasks, Lithography, Temporal resolution, Temporal coherence, Metrology

Read Abstract +

Proceedings Article | 21 February 2020 Paper

Soft x-ray high order harmonic generation driven by high repetition rate ultrafast thulium-doped fiber lasers

Martin Gebhardt, Tobias Heuermann, Ziyao Wang, Mathias Lenski, Christian Gaida, Robert Klas, Alexander Kirsche, Steffen Hädrich, Jan Rothhardt, Jens Limpert

Proceedings Volume 11260, 112600U (2020) https://doi.org/10.1117/12.2546151

KEYWORDS: Fiber lasers, Laser systems engineering, Argon, X-rays, Ultrafast phenomena, Pulsed laser operation, Spectroscopy, Optical filters, Aluminum, Harmonic generation

Read Abstract +

Proceedings Article | 7 March 2019 Paper

Tm:fiber CPA driven nonlinear pulse compression stage delivering multi-GW, sub-10 fs pulses at 20 W of average power

Martin Gebhardt, Christian Gaida, Tobias Heuermann, Cesar Jauregui, Jose Antonio-Lopez, Axel Schulzgen, Rodrigo Amezcua-Correa, Jan Rothhardt, Jens Limpert

Proceedings Volume 10897, 108971E (2019) https://doi.org/10.1117/12.2509650

KEYWORDS: Fiber lasers, Dispersion, Ultrafast phenomena, Laser sources, Laser systems engineering, Short wave infrared radiation, Mid-IR, Pulsed laser operation, Silica, Photonics

Read Abstract +

Proceedings Article | 17 July 2015 Paper

High photon flux XUV and soft x-ray sources enabled by high harmonic generation of high power fiber lasers

Jan Rothhardt, Steffen Hädrich, Manuel Krebs, Jens Limpert, Andreas Tünnermann

Proceedings Volume 9524, 95242O (2015) https://doi.org/10.1117/12.2190419

KEYWORDS: Extreme ultraviolet, High harmonic generation, Neon, Mirrors, Optical fibers, Helium, High power fiber lasers, Femtosecond fiber lasers, Xenon, Phase matching

Read Abstract +

Proceedings Article | 4 March 2015 Paper

22GW peak power femtosecond fiber CPA system

Arno Klenke, Steffen Hädrich, Tino Eidam, Jan Rothhardt, Marco Kienel, Armin Hoffmann, Stefan Demmler, Thomas Gottschall, Jens Limpert, Andreas Tünnermann

Proceedings Volume 9344, 93441A (2015) https://doi.org/10.1117/12.2079193

KEYWORDS: Fiber amplifiers, Femtosecond phenomena, Optical amplifiers, Beam splitters, Polarization, Laser systems engineering, Fiber lasers, Ultrafast phenomena, Phase shift keying, Sensors

Read Abstract +

Proceedings Article | 20 February 2015 Paper

BBO sapphire compound for high-power frequency conversion

Carolin Rothhardt, Jan Rothhardt, Arno Klenke, Thomas Peschel, Ramona Eberhardt, Jens Limpert, Andreas Tünnermann

Proceedings Volume 9346, 93460U (2015) https://doi.org/10.1117/12.2078302

KEYWORDS: Crystals, Sapphire, Nonlinear crystals, Laser crystals, Frequency conversion, High power lasers, Harmonic generation, Finite element methods, Atomic force microscopy, Laser systems engineering

Read Abstract +

Proceedings Article | 7 March 2014 Paper

High-pulse energy and average-power ultrashort laser pulses via nonlinear compression of coherently combined fiber CPA system

Steffen Hädrich, Arno Klenke, Armin Hoffmann, Tino Eidam, Thomas Gottschall, Jan Rothhardt, Jens Limpert, Andreas Tünnermann

Proceedings Volume 8961, 89611E (2014) https://doi.org/10.1117/12.2039603

KEYWORDS: Complex systems, Mirrors, Amplifiers, Laser systems engineering, Argon, Ultrafast phenomena, Fiber lasers, Capillaries, Femtosecond phenomena, Modulation

Read Abstract +

Proceedings Article | 26 February 2013 Paper

High average power fiber laser system for attosecond science

Jan Rothhardt, Steffen Hädrich, Stefan Demmler, Manuel Krebs, Jens Limpert, Andreas Tünnermann

Proceedings Volume 8601, 86011D (2013) https://doi.org/10.1117/12.2002425

KEYWORDS: Fiber lasers, Laser systems engineering, Extreme ultraviolet, Laser applications, Optical amplifiers, Mirrors, High harmonic generation, Signal generators, Phase measurement, Laser stabilization

Read Abstract +

Proceedings Article | 23 February 2012 Paper

Coherently combined fiber CPA system delivering 3-mJ femtosecond pulses

Arno Klenke, Enrico Seise, Stefan Demmler, Jan Rothhardt, Sven Breitkopf, Jens Limpert, Andreas Tünnermann

Proceedings Volume 8237, 823708 (2012) https://doi.org/10.1117/12.908175

KEYWORDS: Polarization, Optical amplifiers, Amplifiers, Fiber lasers, Femtosecond phenomena, Fiber amplifiers, Laser systems engineering, Ultrafast phenomena, Beam splitters, Reflectivity

Read Abstract +

Proceedings Article | 16 February 2012 Paper

High peak and average power generation by cascaded nonlinear compression of fiber CPA system

Steffen Hädrich, Jan Rothhardt, Henning Carstens, Stefan Demmler, Thomas Gottschall, Jens Limpert, Andreas Tünnermann

Proceedings Volume 8237, 82371O (2012) https://doi.org/10.1117/12.907883

KEYWORDS: Complex systems, Noble gases, Mirrors, Fiber lasers, Ultrafast phenomena, High harmonic generation, Pulsed laser operation, Laser systems engineering, Xenon, Fiber amplifiers

Read Abstract +

Proceedings Article | 15 February 2012 Paper

High-quality 3.6-fs pulses by compression of an octave-spanning supercontinuum

Jan Rothhardt, Stefan Demmler, Alexander Heidt, Alexander Hartung, Hartmut Bartelt, Erich Rohwer, Jens Limpert, Andreas Tünnermann

Proceedings Volume 8240, 82400Z (2012) https://doi.org/10.1117/12.908390

KEYWORDS: Dispersion, Optical fibers, Mirrors, Phase measurement, Physics, Phase shift keying, Modulation, Solids, Oscillators, Spatial light modulators

Read Abstract +

Proceedings Article | 11 February 2011 Paper

High-average power second harmonic generation of femtosecond fiber lasers

S. Hädrich, J. Rothhardt, T. Eidam, T. Gottschall, J. Limpert, A. Tünnermann

Proceedings Volume 7914, 79140S (2011) https://doi.org/10.1117/12.874872

KEYWORDS: Harmonic generation, Fiber amplifiers, Second-harmonic generation, Crystals, Infrared radiation, Pulsed laser operation, Femtosecond phenomena, Picosecond phenomena, Amplifiers, Nonlinear crystals

Read Abstract +

Proceedings Article | 17 February 2010 Paper

2-GW peak power 71-fs pulses at 50 kHz based on nonlinear compression of a fiber CPA system

S. Hädrich, J. Rothhardt, T. Gottschall, J. Limpert, A. Tünnermann

Proceedings Volume 7580, 75800V (2010) https://doi.org/10.1117/12.841555

KEYWORDS: Mirrors, Xenon, Numerical simulations, Ultrafast phenomena, Fiber lasers, Laser systems engineering, Complex systems, Fiber amplifiers, Dispersion, Noble gases

Read Abstract +

Proceedings Article | 17 February 2010 Paper

Simple and monolithic picosecond pulse shaper based on fiber Bragg gratings

J. Rothhardt, S. Hädrich, T. Gotschall, J. Limpert, A. Tünnermann, M. Rothhardt, M. Becker, S. Brückner, H. Bartelt

Proceedings Volume 7580, 75801B (2010) https://doi.org/10.1117/12.841611

KEYWORDS: Fiber Bragg gratings, Picosecond phenomena, Reflectivity, Pulse shaping, Fiber optics, Pulsed laser operation, Fiber lasers, Polarization, Crystals, Step index fibers

Read Abstract +

Proceedings Article | 19 February 2009 Paper

Femtosecond fiber CPA system with 325W average power

T. Eidam, F. Röser, E. Seise, T. Gottschall, S. Hädrich, J. Rothhardt, T. Schreiber, J. Limpert, A. Tünnermann

Proceedings Volume 7195, 719514 (2009) https://doi.org/10.1117/12.811903

KEYWORDS: Laser systems engineering, Fiber amplifiers, Femtosecond phenomena, Oscillators, Optical amplifiers, Dielectrics, Medium wave, Ultrafast phenomena, Solid state lasers, Laser applications

Read Abstract +

Proceedings Article | 19 February 2009 Paper

2 GW peak-power 29 fs pulses delivered by 30 kHz fiber chirped pulse amplifier pumped optical parametric amplifier

J. Rothhardt, S. Hädrich, F. Röser, T. Gottschall, J. Limpert, A. Tünnermann

Proceedings Volume 7195, 719513 (2009) https://doi.org/10.1117/12.808761

KEYWORDS: Optical amplifiers, Fiber amplifiers, Mirrors, Oscillators, Crystals, Pulsed laser operation, Ultrafast phenomena, Beam splitters, Optical testing, Quality measurement

Read Abstract +

Proceedings Article | 5 March 2008 Paper

All-optical synchronization of a Q-switched 100ps microchip laser to a femtosecond laser reference source

D. Nodop, J. Rothardt, S. Haedrich, J. Limpert, A. Tünnermann

Proceedings Volume 6871, 687102 (2008) https://doi.org/10.1117/12.763516

KEYWORDS: Femtosecond phenomena, Pulsed laser operation, Q switched lasers, Laser crystals, Crystals, Semiconductor lasers, Q switches, Q switching, Ultrafast phenomena, Absorption

Read Abstract +

Proceedings Article | 25 February 2008 Paper

Sub 30 fs pulses from 2 MHz repetition rate fiber amplifier pumped optical parametric amplifier

J. Rothhardt, S. Hädrich, F. Röser, B. Ortac, J. Limpert, A. Tünnermann

Proceedings Volume 6873, 68731L (2008) https://doi.org/10.1117/12.768520

KEYWORDS: Fiber amplifiers, Optical amplifiers, Solitons, Oscillators, Photonic crystal fibers, Nonlinear crystals, Diffraction gratings, Crystals, Silica, Phase modulation

Read Abstract +

Proceedings Article | 22 February 2007 Paper

Fiber laser pumped ultra-fast parametric amplifiers

J. Limpert, D. Schimpf, J. Rothhardt, S. Hädrich, O. Schmidt, F. Röser, T. Schreiber, A. Tünnermann, C. Aguergaray, E. Cormier, T. Andersen, C. Pedersen

Proceedings Volume 6453, 64530M (2007) https://doi.org/10.1117/12.717535

KEYWORDS: Fiber amplifiers, Fiber lasers, Crystals, Ultrafast phenomena, Photonic crystal fibers, Optical amplifiers, Solitons, Oscillators, Bragg cells, Photonic crystals

Read Abstract +

Proceedings Article | 23 February 2006 Paper

50 W, 50 fs pulses from a fiber laser system using nonlinear fiber compression

F. Röser, J. Rothhardt, T. Schreiber, J. Limpert, A. Tünnermann

Proceedings Volume 6102, 610210 (2006) https://doi.org/10.1117/12.646300

KEYWORDS: Dispersion, Mirrors, Fiber lasers, Complex systems, Laser systems engineering, Photonic crystal fibers, Fiber amplifiers, Medium wave, Scanning probe microscopy, Laser damage threshold

Read Abstract +

Showing 5 of 27 publications

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years