558 citations · 2.2k across the 33 of their papers we have counts for
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High-Resolution Hydrogen Spectroscopy and the Proton Radius Puzzle
Simon Thomas, Hélène Fleurbaey, Sandrine Galtier +3
High resolution spectroscopy of the hydrogen atom takes on particular importance in the new SI, as it allows to accurately determine fundamental constants, such as the Rydberg cons…
Compact 20-pass thin-disk amplifier insensitive to thermal lensing
M. Zeyen, A. Antognini, K. Kirch +8
We present a multi-pass amplifier which passively compensates for distortions of the spherical phase front occurring in the active medium. The design is based on the Fourier transf…
Passive alignment stability and auto-alignment of multipass amplifiers based on Fourier transforms
Karsten Schuhmann, Klaus Kirch, Andreas Knecht +8
The stability properties of Fourier-based multipass amplifier to misalignments (tilts) of its optical components has been investigated. For this purpose, a method to quantify the s…