Trapped ultracold molecular ions

Candidates for an optical molecular clock for a fundamental physics mission in space

Verfasst von

B. Roth, J. Koelemeij, H. Daerr, I. Ernsting, S. Jorgensen, M. Okhapkin, A. Wicht, A. Nevsky, S. Schiller

Abstract

Narrow ro-vibrational transitions in ultracold molecules are excellent candidates for frequency references in the near-IR to visible spectral domain and interesting systems for fundamental tests of physics, in particular for a satellite test of the gravitational redshift of clocks. We have performed laser spectroscopy of several ro-vibrational overtone transitions ν = 0 → ν = 4 in HD⁺ ions at around 1.4 μm. 1+1 REMPD was used as a detection method, followed by measurement of the number of remaining molecules. The molecular ions were stored in a linear radiofrequency trap and cooled to millikelvin temperatures, by sympathetic cooling using laser-cooled Be⁺ ions simultaneously stored in the same trap.

Details

Externe Organisation(en): Universitätsklinikum Düsseldorf
Typ: Aufsatz in Konferenzband
Anzahl der Seiten: 6
Publikationsdatum: 21.11.2017
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Elektronische, optische und magnetische Materialien, Physik der kondensierten Materie, Angewandte Informatik, Angewandte Mathematik, Elektrotechnik und Elektronik
Elektronische Version(en): https://doi.org/10.1117/12.2308072 (Zugang: Offen )

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