Dr. Mathias Siebold Profile

Dr. Mathias Siebold

at Helmholtz-Zentrum Dresden-Rossendorf eV

SPIE Involvement:

Author

Proceedings Article | 14 May 2019 Presentation

Off-harmonic optical probing of high-intensity laser interaction with hydrogen targets using a stand-alone probe laser system (Conference Presentation)

Karl Zeil, Constantin Bernert, Stephan Kraft, Markus Löser, Josefine Metzkes-Ng, Lieselotte Obst-Huebl, Martin Rehwald, Mathias Siebold, Tim Ziegler, Ulrich Schramm

Proceedings Volume 11037, 1103704 (2019) https://doi.org/10.1117/12.2520884

KEYWORDS: Hydrogen, Laser beam diagnostics, Laser systems engineering, Plasma, Cryogenics, Ion beams, Computer simulations, Data conversion, Data analysis, Mode locking

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The development of high-intensity short-pulse lasers in the Petawatt regime offers the possibility to design new compact accelerator schemes by utilizing high-density targets for the generation of ion beams with multiple 10 MeV energy per nucleon. The optimization of the acceleration process demands comprehensive exploration of the plasma dynamics involved, for example via spatially and temporally resolved optical probing. Experimental results can then be compared to numerical particle-in-cell simulations, which is particularly sensible in the case of cryogenic hydrogen jet targets [1]. However, strong plasma self-emission and conversion of the plasma’s drive laser wavelength into its harmonics often masks the interaction region and interferes with the data analysis. Recently, the development of a stand-alone and synchronized probe laser system for off-harmonic probing at the DRACO laser operated at the Helmholtz-Zentrum Dresden–Rossendorf showed promising performance [2]. Here, we present an updated stand-alone probe laser system applying a compact CPA system based on a synchronized fs mode-locked oscillator operating at 1030 nm, far off the plasma’s drive laser wavelength of 800 nm. A chirped volume Bragg grating (Optigrate Corp) is used as a hybrid stretcher and compressor unit. The system delivers 160 fs pulses with a maximum energy of 0.9 mJ. By deploying the upgraded probe laser system in the laser-proton acceleration experiment with the renewable cryogenic hydrogen jet target, the plasma self-emission could be significantly suppressed while studying the temporal evolution of the expanding plasma jet. Recorded probe images resemble those of z-pinch experiments with metal wires and indicate a sausage-like instability along the jet axis, which will be discussed. References [1] L. Obst, et al. Efficient laser-driven proton acceleration from cylindrical and planar cryogenic hydrogen jets. Sci. Rep., 7:10248, 2017. [2] T. Ziegler, et al. Optical probing of high intensity laser interaction with micron-sized cryogenic hydrogen jets. Plasma Phys. Control. Fusion, 2018. doi:10.1088/1361-6587/ aabf4f. [3] C.P. João, et al. Dispersion compensation by two-stage stretching in a sub-400 fs, 1.2 mJ Yb:CaF2 amplifier. Opt. Express, 22:10097–10104, 2014.

Proceedings Article | 21 June 2017 Presentation

Scaling EUV and X-ray Thomson sources to optical free-electron laser operation with traveling-wave Thomson scattering (Conference Presentation)

Klaus Steiniger, Daniel Albach, Alexander Debus, Markus Loeser, Richard Pausch, Fabian Roeser, Ulrich Schramm, Matthias Siebold, Michael Bussmann

Proceedings Volume 10234, 1023409 (2017) https://doi.org/10.1117/12.2265690

KEYWORDS: X-ray sources, Pulsed laser operation, Free electron lasers, Extreme ultraviolet, X-rays, Thomson scattering, Laser scattering, Laser optics, EUV optics, X-ray optics

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Traveling-Wave Thomson-Scattering (TWTS) allows for the realization of optical free-electron lasers (OFELs) from the interaction of short, high-power laser pulses with brilliant relativistic electron bunches. The laser field provides the optical undulator which is traversed by the electrons. In order to achieve coherent amplification of radiation through electron microbunching the interaction between electrons and laser must be maintained over hundreds to thousands of undulator periods. Traveling-Wave Thomson-Scattering is the only scattering geometry so far allowing for the realization of optical undulators of this length which is at the same time scalable from extreme ultraviolet to X-ray photon energies. TWTS is also applicable for the realization of incoherent high peak brightness hard X-ray to gamma-ray sources which can provide orders of magnitude higher photon output than classic head-on Thomson sources. In contrast to head-on Thomson sources TWTS employs a side-scattering geometry where laser and electron propagation direction of motion enclose an angle. Tilting the laser pulse front with respect to the wave front by half of this interaction angle optimizes electron and laser pulse overlap. In the side-scattering geometry the tilt of the pulse-front compensates the spatial offset between electrons and laser pulse-front which would be present otherwise for an electron bunch far from the interaction point where it overlaps with the laser pulse center. Thus the laser pulse-front tilt ensures continuous overlap between laser pulse and electrons while these traverse the laser pulse cross-sectional area. This allows to control the interaction distance in TWTS by the laser pulse width rather than laser pulse duration as is the case for head-on Thomson scattering. Utilizing petawatt class laser pulses with millimeter to centimeter scale width allows for the realization of compact optical undulators with thousands of periods. When laser pulses for TWTS are prepared, care has to be taken of laser dispersion. Especially for scenarios featuring interaction angles of several ten to over one hundred degree the angular dispersion originating from laser pulse-front tilt can significantly prolong the pulse duration during the interaction which leads to a decrease in optical undulator amplitude and eventually terminates the interaction long before the target interaction distance is reached. In the talk it is shown how a pair of two gratings can be used to first generate the pulse-front tilt and second control and compensate dispersion during the interaction by utilizing the plane of optimum compression. Furthermore an experimental setup strategy is presented allowing for an interaction outside the laser pulse focus. This is a necessity for TWTS OFELs requiring focusing to reach optical undulator strengths on the order of unity since the centimeter scale laser pulse width at the interaction point result in turn in Rayleigh lengths on the order of one hundred meter and thus in laser focusing distances of several hundred meter. The talk shows how an out-of-focus interaction geometry utilizing strong focusing of the incident laser pulse needs to be designed in order to regain compactness by reducing the focusing distance by one to two orders of magnitude.

Proceedings Article | 12 March 2015 Paper

Fabrication of highly efficient transparent metal thin film electrodes using Direct Laser Interference Patterning

S. Eckhardt, L. Müller-Meskamp, M. Loeser, M. Siebold, A. Lasagni

Proceedings Volume 9351, 935116 (2015) https://doi.org/10.1117/12.2082537

KEYWORDS: Aluminum, Thin films, Metals, Resistance, Copper, Electrodes, Transmittance, Laser ablation, Optical lithography, Scanning electron microscopy

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Proceedings Article | 7 May 2013 Paper

PEnELOPE: a high peak-power diode-pumped laser system for laser-plasma experiments

Mathias Siebold, Fabian Roeser, Markus Loeser, Daniel Albach, Ulrich Schramm

Proceedings Volume 8780, 878005 (2013) https://doi.org/10.1117/12.2017522

KEYWORDS: Optical amplifiers, Semiconductor lasers, Near field, Laser systems engineering, Mirrors, Pulsed laser operation, Near field optics, Diodes, Laser applications, Crystals

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Proceedings Article | 9 June 2011 Paper

Optical properties of CaF[sub]2[/sub] and Yb[sup]3+[/sup]:CaF[sub]2[/sub] for laser applications

Jörg Stäblein, Karin Pöhl, Andreas Weisleder, Gordon v. d. Gönna, Thomas Töpfer, Joachim Hein, Mathias Siebold

Proceedings Volume 8080, 808002 (2011) https://doi.org/10.1117/12.886830

KEYWORDS: Crystals, Refractive index, Ytterbium, Laser applications, Optical properties, Laser crystals, Birefringence, Spectroscopy, Annealing, Raw materials

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Proceedings Article | 9 June 2011 Paper

High-efficiency cyrogenic-cooled diode-pumped amplifier with relay imaging for nanosecond pulses

J. Körner, J. Hein, M. Kahle, H. Liebetrau, M. Kaluza, M. Siebold, M. Loeser

Proceedings Volume 8080, 80800D (2011) https://doi.org/10.1117/12.887408

KEYWORDS: Optical amplifiers, Relays, Image processing, Mirrors, Semiconductor lasers, Image quality, High power lasers, Laser-matter interactions, Photonics, Laser energy

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Proceedings Article | 9 June 2011 Paper

Temperature dependent measurement of absorption and emission cross sections for various Yb[sup]3+[/sup] doped laser materials

J. Körner, J. Hein, M. Kahle, H. Liebetrau, M. Lenski, M. Kaluza, M. Loeser, M. Siebold

Proceedings Volume 8080, 808003 (2011) https://doi.org/10.1117/12.887410

KEYWORDS: Absorption, Temperature metrology, Luminescence, Cryogenics, Fiber coupled lasers, Phonons, Liquids, Nitrogen, Fiber couplers, Diodes

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Proceedings Article | 22 April 2009 Open Access

Diode-pumped ytterbium-based chirped-pulse amplifier

Mathias Siebold, Sandro Klingebiel, Christoph Wandt, Markus Wolf, Joerg Koerner, Marco Hornung, Joachim Hein, Ferenc Krausz, Stefan Karsch

Proceedings Volume 7131, 713110 (2009) https://doi.org/10.1117/12.816705

KEYWORDS: Optical amplifiers, Semiconductor lasers, Pulsed laser operation, Mirrors, Glasses, Femtosecond phenomena, Amplifiers, Picosecond phenomena, Oscillators, Diodes

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Proceedings Article | 30 December 2008 Paper

Comparative damage study on ytterbium-doped materials for diode-pumped high energy lasers

R. Bödefeld, J. Koerner, M. Siebold, M. Wolf, A. Herrmann, J. Hein, M. Kaluza

Proceedings Volume 7132, 713214 (2008) https://doi.org/10.1117/12.804431

KEYWORDS: Absorption, Laser damage threshold, Semiconductor lasers, Crystals, Ultraviolet radiation, Optical amplifiers, Atomic force microscopy, Laser induced damage, Lead, Pulsed laser operation

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Proceedings Article | 16 April 2008 Open Access

High-energy diode-pumped Yb:YAG chirped pulse amplifier

Mathias Siebold, Christoph Wandt, Sandro Klingebiel, Zsuzsanna Major, Sergei Trushin, Izhar Ahmad, Tie-Jun Wang, Joachim Hein, Ferenc Krausz, Stefan Karsch

Proceedings Volume 6998, 69980E (2008) https://doi.org/10.1117/12.780974

KEYWORDS: Optical amplifiers, Crystals, Semiconductor lasers, Pulsed laser operation, Fiber amplifiers, Mirrors, Picosecond phenomena, Oscillators, Fiber lasers, Laser crystals

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Proceedings Article | 15 October 2005 Paper

Profile homogenization and monitoring for a multiple 100 J diode-laser pumping system

M. Siebold, S. Podleska, J. Hein, R. Bödefeld, M. Hornung, M. Schnepp, R. Sauerbrey

Proceedings Volume 5962, 59622I (2005) https://doi.org/10.1117/12.623777

KEYWORDS: Semiconductor lasers, Diodes, Mirrors, Glasses, Laser glasses, Optical amplifiers, Collimation, Solar energy, Sensors, Homogenization

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Proceedings Article | 15 October 2005 Paper

Alignment of a multigrating mosaic compressor in a PW-class CPA-laser

M. Hornung, R. Bödefeld, M. Siebold, S. Podleska, M. Schnepp, J. Hein, R. Sauerbrey

Proceedings Volume 5962, 59622K (2005) https://doi.org/10.1117/12.624806

KEYWORDS: Diffraction gratings, Near field, Diffraction, Mirrors, Beam splitters, Continuous wave operation, Optical design, Light wave propagation, Wave propagation, Laser systems engineering

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Showing 5 of 12 publications

Conference Committee Involvement (6)

High Power Lasers and Applications

19 April 2021 | Online Only, Czech Republic

High-Power, High-Energy, and High-Intensity Laser Technology

3 April 2019 | Prague, Czech Republic

High-Power, High-Energy, and High-Intensity Laser Technology

26 April 2017 | Prague, Czech Republic

High-Power, High-Energy, and High-Intensity Laser Technology

14 April 2015 | Prague, Czech Republic

High-Power, High-Energy, and High-Intensity Laser Technology

15 April 2013 | Prague, Czech Republic

Showing 5 of 6 Conference Committees

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