Bonn 2025 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 65: Poster – Cold Molecules (joint session MO/Q)

Q 65.12: Poster

Thursday, March 13, 2025, 17:00–19:00, Tent

Advancements towards Zeeman slowing and trapping of CaF — •Timo Poll, Julius Niederstucke, Sebastian Anskeit, Mariia Stepanova, Paul Kaebert, Supeng Xu, Mirco Siercke, and Silke Ospelkaus — Institut für Quantenoptik, Leibniz Universität Hannover

Significant advancements have recently been achieved in direct laser cooling of molecules, bringing them to temperatures near absolute zero [1,2]. Nevertheless, the number of molecules that can be trapped from molecular beams using standard laser-based techniques remains a limiting factor in experiments [3,4]. In this work, we explain our strategies to enhance the molecular yield in these experiments. We present our experimental findings on the Zeeman slower developed for directly laser-coolable molecules, as proposed by our group [5], alongside the concepts and initial experimental efforts aimed at establishing a sub-Doppler cooling magneto-optical trap [6,7].

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[1] J. F. Barry et al. 2012

[2] Y. Wu et al. 2021

[3] S. Truppe et al. 2017

[4] L. Anderegg et al. 2017

[5] M. Petzold et al. 2018

[6] S. Xu et al. 2021

[7] S. Xu et al. 2022

Keywords: Zeeman Slowing; Direct Laser Cooling; CaF; cryogenic buffer gas beam; ultracold molecules