Characterizing the Zeeman slowing force for 40Ca19F molecules
| Autor: | M. Petzold, M Stepanova, P Kaebert, Silke Ospelkaus, M Siercke, S Xu, T Poll |
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| Rok vydání: | 2021 |
| Předmět: |
Physics
spectroscopy Zeeman slower Zeeman effect Atomic Physics (physics.atom-ph) Atom- und Molekülphysik Ultrakalte Gase FOS: Physical sciences General Physics and Astronomy Physics - Atomic Physics symbols.namesake symbols Molecule ddc:530 Atomic and molecular physics Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik ddc:500 quantum gases Atomic physics cold molecules Spectroscopy Dewey Decimal Classification::500 | Naturwissenschaften |
| Zdroj: | New Journal of Physics 23 (2021), Nr. 9 |
| ISSN: | 1367-2630 |
| DOI: | 10.1088/1367-2630/ac1ed7 |
| Popis: | In this paper we investigate the feasibility of Zeeman slowing calcium monofluoride (CaF) molecules originating from a cryogenic buffer gas cell. We measure the $A^2\Pi_{1/2} (v=0, J=\frac{1}{2}) - X^2\Sigma_{1/2} (v=0, N=1)$ hyperfine spectrum of CaF in the Paschen-Back regime and find excellent agreement with theory. We then investigate the scattering rate of the molecules in a molecular Zeeman slower by illuminating them with light from a 10mW broad repumper and a 10mW multi-frequency slowing laser. By comparing our results to theory we can calculate the photon scattering rate at higher powers, leading to a force profile for Zeeman slowing. We show results from a simple 1D simulation demonstrating that this force is both strong and narrow enough to lead to significant compression, and slowing of the molecules to trappable velocities. Comment: 17 pages, 5 figures |
| Databáze: | OpenAIRE |
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