330 citations · 2.7k across the 41 of their papers we have counts for
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Visualizing the ultra-structure of microorganisms using table-top extreme ultraviolet imaging
Chang Liu, Wilhelm Eschen, Lars Loetgering +10
Table-top extreme ultraviolet (EUV) microscopy offers unique opportunities for label-free investigation of biological samples. Here, we demonstrate ptychographic EUV imaging of two…
500 W rod-type 4x4 multi-core ultrafast fiber laser
A. Klenke, A. Steinkopff, C. Aleshire +10
We present a coherently-combined femtosecond fiber CPA system based on a rod-type, Ytterbium-doped, multicore fiber with 4x4 cores. A high average power of up to 500 W (after combi…
The scaling potential of beam-splitter-based coherent beam combination
Michael Mueller, Christopher Aleshire, Joachim Buldt +4
The impact of nonlinear refraction and residual absorption on the achievable peak and average power in beam-splitter-based coherent beam combination is analyzed theoretically. Whil…
Multipass cell for high-power few-cycle compression
Michael Mueller, Joachim Buldt, Henning Stark +2
A multipass cell for nonlinear compression to few-cycle pulse duration is introduced comprising dielectrically enhanced silver mirrors on silicon substrates. Spectral broadening wi…
Gas-plasma based generation of broadband THz radiation with 640 mW average power
Joachim Buldt, Henning Stark, Michael Mueller +3
We present a high-power source of broadband terahertz radiation covering the whole THz spectral region (0.1-30 THz). The two-color gas plasma generation process is driven by a stat…
Transverse mode instability and thermal effects in thulium-doped fiber amplifiers under high thermal loads
Christian Gaida, Martin Gebhardt, Tobias Heuermann +3
We experimentally analyze the average-power-scaling capabilities of ultrafast, thulium-doped fiber amplifiers. It has been theoretically predicted that thulium-doped fiber laser sy…