SAMOP 2023 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 27: Poster III
A 27.9: Poster
Donnerstag, 9. März 2023, 16:30–19:00, Empore Lichthof
Nonlinear pulse compression in a gas-filled multi-pass cell — •Prachi Nagpal1, Jan-Hendrik Oelmann1, Tobias Heldt1, Lennart Guth1, Simon Angstenberger2, Janko Nauta3, Nick Lackmann1, Thomas Pfeifer1, and José R. Crespo López-Urrutia1 — 1Max Planck Institut für Kernphysik, Heidelberg, Germany — 24th Physics Institute, University of Stuttgart, Germany — 3Department of Physics, Swansea University, UK
A novel approach is proposed for nonlinear spectral broadening and temporal pulse compression well below the gain-bandwidth limitation of the laser gain medium [1]. We install, in a gas-filled multi-pass cell, a potassium dihydrogen phosphate (KDP) crystal, which exhibits anomalous dispersion around the central wavelength (1030 nm) of the seed laser [2]. The resulting total dispersion is adjusted by changing the pressure of a normal dispersive gas filling the cell. Chirped mirrors become unnecessary, and pulse compression can be tuned by adjusting the number of passes. Shorter pulses and a broader spectrum will enhance high harmonic generation for an extreme ultraviolet frequency comb which will be employed for quantum logic spectroscopy of highly charged ions [3].
[1] Anne-Lise Viotti et al., Optica 9, 197-216 (2022) [2] Zernike, J. Opt. Soc. Am. 54, 1215*1220 (1964) [3] L. Schmöger et al., Science 347, 1233 (2015)