activity
20212024
most citedPlanetary evolution with atmospheric photoevaporation II: Fitting the slope of the radius valley by combining boil-off and XUV-driven escape

19 citations · 34 across the 6 of their papers we have counts for

collaborators

7 papers

physics.optics2024

Radiant fluence from ray tracing in optical multipass systems

Mirosław Marszałek, Lukas Affolter, Oguzhan Kara +4

In applications of optical multipass cells in photochemical reactors and laser excitation of weak transitions, estimation of the radiation dose in a volume of interest allows to as…

physics.optics2023

A compact 20-pass thin-disk multipass amplifier stable against thermal lensing effects and delivering 330 mJ pulses with

Manuel Zeyen, Lukas Affolter, Marwan Abdou Ahmed +11

We report on an Yb:YAG thin-disk multipass amplifier delivering 50 ns long pulses at a central wavelength of 1030 nm with an energy of 330 mJ at a repetition rate of 100 Hz. The be…

astro-ph.EP2023★ 19 cited

Planetary evolution with atmospheric photoevaporation II: Fitting the slope of the radius valley by combining boil-off and XUV-driven escape

Lukas Affolter, Christoph Mordasini, Apurva V. Oza +2

The Kepler satellite has revealed a gap between sub-Neptunes and super-Earths that atmospheric escape models had predicted as an evaporation valley. We seek to contrast results fro…

physics.optics2023★ 1 cited

Injection-seeded high-power Yb:YAG thin-disk laser stabilized by the Pound-Drever-Hall method

Manuel Zeyen, Lukas Affolter, Marwan Abdou Ahmed +12

We demonstrate an injection-seeded thin-disk Yb:YAG laser at 1030 nm, stabilized by the Pound-Drever-Hall (PDH) method. We modified the PDH scheme to obtain an error signal free fr…

physics.atom-ph2022

Diffusion of muonic hydrogen in hydrogen gas and the measurement of the 1 hyperfine splitting of muonic hydrogen

J. Nuber, A. Adamczak, M. Abdou Ahmed +46

The CREMA collaboration is pursuing a measurement of the ground-state hyperfine splitting (HFS) in muonic hydrogen (p) with 1 ppm accuracy by means of pulsed laser spectroscopy.…

physics.optics2022★ 12 cited

Pound-Drever-Hall locking scheme free from Trojan operating points

Manuel Zeyen, Lukas Affolter, Marwan Abdou Ahmed +11

The Pound-Drever-Hall (PDH) technique is a popular method for stabilizing the frequency of a laser to a stable optical resonator or, vice versa, the length of a resonator to the fr…

physics.atom-ph2021★ 2 cited

Laser excitation of the 1s-hyperfine transition in muonic hydrogen

P. Amaro, A. Adamczak, M. Abdou Ahmed +43

The CREMA collaboration is pursuing a measurement of the ground-state hyperfine splitting (HFS) in muonic hydrogen (p) with 1 ppm accuracy by means of pulsed laser spectroscopy…