We spectroscopically investigate a pathway for the conversion of 23Na39K Feshbach molecules into rovibronic ground state molecules via stimulated Raman adiabatic passage. Using photoassociation spectroscopy from the diatomic scattering threshold in the a 3Σ+ potential, we locate the resonantly mixed electronically excited intermediate states |B1Π, v=8⟩ and |c3Σ+, v=30⟩ which, due to their singlet-triplet admixture, serve as an ideal bridge between predominantly a 3Σ+ Feshbach molecules and pure X 1Σ+ ground state molecules. We investigate their hyperfine structure and present a simple model to determine the singlet-triplet coupling of these states. Using Autler-Townes spectroscopy, we locate the rovibronic ground state of the 23Na39K molecule (X1Σ+, v=0, N=0⟩) and the second rotationally excited state N = 2 to unambiguously identify the ground state. We also extract the effective transition dipole moment from the excited to the ground state. Our investigations result in a fully characterized scheme for the creation of ultracold bosonic 23Na39K ground state molecules.
A pathway to ultracold bosonic 23Na39K ground state molecules / Voges, K. K.; Gersema, P.; Hartmann, T.; Schulze, T. A.; Zenesini, A.; Ospelkaus, S.. - In: NEW JOURNAL OF PHYSICS. - ISSN 1367-2630. - 21:12(2019), p. 123034. [10.1088/1367-2630/ab5f31]
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Titolo: | A pathway to ultracold bosonic 23Na39K ground state molecules | |
Autori: | Voges, K. K.; Gersema, P.; Hartmann, T.; Schulze, T. A.; Zenesini, A.; Ospelkaus, S. | |
Autori Unitn: | ||
Titolo del periodico: | NEW JOURNAL OF PHYSICS | |
Anno di pubblicazione: | 2019 | |
Numero e parte del fascicolo: | 12 | |
Codice identificativo Scopus: | 2-s2.0-85081656962 | |
Codice identificativo WOS: | WOS:000513664500001 | |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1088/1367-2630/ab5f31 | |
Handle: | http://hdl.handle.net/11572/344275 | |
Citazione: | A pathway to ultracold bosonic 23Na39K ground state molecules / Voges, K. K.; Gersema, P.; Hartmann, T.; Schulze, T. A.; Zenesini, A.; Ospelkaus, S.. - In: NEW JOURNAL OF PHYSICS. - ISSN 1367-2630. - 21:12(2019), p. 123034. [10.1088/1367-2630/ab5f31] | |
Appare nelle tipologie: | 03.1 Articolo su rivista (Journal article) |