Timo Eichner
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Cryogenic 750-mJ Ti:sapphire amplifier for laser plasma acceleration at a 100-Hz repetition rate Open
Laser plasma acceleration (LPA) is rapidly evolving from proof-of-principle experiments to stable and reliable accelerator operation. An important next step in this evolution is to increase the repetition rate to enable performance improve…
Reducing wavelength jitter in white-light seeded femtosecond optical parametric chirped-pulse amplifiers Open
White light generation (WLG) in bulk material can be used as a versatile broadband seed source for optical parametric chirped pulse amplification (OPCPA) stages. In this case, it is beneficial to optimize the performance of the WLG seeder …
Out-of-plane multilayer-dielectric-grating compressor for ultrafast Ti:sapphire pulses Open
Extreme heat loads on optics, in particular the final pulse compression gratings, are a major hurdle to overcome in the ongoing push towards high average power (kW) and high repetition rate (kHz) operation of terawatt-class Ti:sapphire las…
Evolutionary optimization and long-term stabilization of a white-light seeded two-stage OPCPA seed laser Open
Ultrafast laser systems, such as optical parametric chirped pulse amplifiers (OPCPA), are complex tools. Optimizing laser performance for a given application is often plagued by intricate couplings between different output parameters, maki…
Tuning curves for a laser-plasma accelerator Open
Applications of laser-plasma accelerators (LPA) require independent control of electron beam parameters. However, due to the complex coupling of the many variables governing the laser-plasma interaction, precisely tuning these parameters b…
Spatio-spectral couplings in saturated collinear OPCPA Open
Ultrafast laser pulses featuring both high spatio-temporal beam quality and excellent energy stability are crucial for many applications. Here, we present a seed laser with high beam quality and energy stability, based on a collinear optic…
Developing a 50 MeV LPA-based Injector at ATHENA for a Compact Storage Ring Open
The laser-driven generation of relativistic electron beams in plasma and their acceleration to high energies with GV/m-gradients has been successfully demonstrated. Now, it is time to focus on the application of laser-plasma accelerated (L…
Optimal Beam Loading in a Laser-Plasma Accelerator Open
Applications of laser-plasma accelerators demand low energy spread beams and high-efficiency operation. Achieving both requires flattening the accelerating fields by controlled beam loading of the plasma wave. Here, we optimize the generat…
Developing a 50 MeV LPA-Based Injector at ATHENA for a Compact Storage Ring Open
The laser-driven generation of relativistic electron beams in plasma and their acceleration to high energies with GV/m-gradients has been successfully demonstrated. Now, it is time to focus on the application of laser-plasma accelerated (L…
Decoding Sources of Energy Variability in a Laser-Plasma Accelerator Open
info:eu-repo/semantics/published
Description of spatio-temporal couplings from heat-induced compressor grating deformation Open
High average power high-intensity laser systems can suffer from a heat-induced deformation of the final compressor gratings, which introduces wavefront aberrations and spatio-temporal couplings to the pulse. Here, we use a simple numerical…
Wavefront degradation of a 200 TW laser from heat-induced deformation of in-vacuum compressor gratings Open
High-repetition-rate high-power laser systems induce a high average power heat deposition into the gold-coated diffraction gratings. To study the effects of the thermal expansion of in-vacuum Pyrex gratings on the laser properties, we scan…
Millijoule-scale narrowband terahertz pulses via phase manipulation of pump laser pulses Open
Electromagnetic radiation at terahertz (THz) frequencies is a useful tool in probing and controlling matter and light in new and interesting ways, especially at high peak-fields and pulse energies. Generating THz radiation often employs no…
View article: Acceleration of electrons in THz driven structures for AXSIS
Acceleration of electrons in THz driven structures for AXSIS Open
We describe initial steps in the development of the technology for a THz-driven accelerator that will drive a compact attosecond X-ray light source. THz-driven structures represent a promising emerging technology for compact acceleration o…