Bonn 2025 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 35: Poster – Precision Spectroscopy of Atoms and Ions (joint session A/Q)
A 35.2: Poster
Donnerstag, 13. März 2025, 17:00–19:00, Tent
Development of a CW Laser System at 185 nm — •Felix Waldherr1, Jonas Gottschalk2, and Simon Stellmer2 — 1Universität Heidelberg, Germany — 2Rheinische Friedrich-Wilhelms-Universität Bonn, Germany
Generating stable and high-power deep ultraviolet (DUV) light is a formidable challenge, where recent advancements in laser technology motivate new attempts to reach wavelengths below 200 nm. We develop a DUV laser system based on two VECSEL lasers, which are frequency converted via multiple stages of sum-frequency generation, to produce light at 185 nm. Once operational, the system will be used for spectroscopy of mercury transitions and to explore molecular oxygen transitions in the Schumann-Runge bands, with implications for fundamental physics and astrochemistry.
Keywords: DUV Transitions; Precision Spectroscopy; Advanced Laser Systems