Supporting data: Measurement of the binding energy of ultracold 87Rb133Cs molecules using an offset-free optical frequency comb

Cornish, Simon L. (Durham University, UK); Molony, Peter K. (Durham University, UK); Le Sueur, C. Ruth (Durham University, UK); Aldegunde, Jesus (Universidad de Salamanca); Gregory, Philip D. (Durham University, UK); Hutson, Jeremy M. (Durham University, UK); Kumar, Avinash (Durham University, UK); Kliese, Russell (Toptica Photonics AG); Puppe, Thomas (Toptica Photonics AG)

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Supporting data: Measurement of the binding energy of ultracold 87Rb133Cs molecules using an offset-free optical frequency comb Open Access

We report the binding energy of 87Rb133Cs molecules in their rovibrational ground state measured using an offset-free optical frequency comb based on difference frequency generation technology. We create molecules in the absolute ground state using stimulated Raman adiabatic passage (STIRAP) with a transfer efficiency of 88%. By measuring the absolute frequencies of our STIRAP lasers, we find the energy-level difference from an initial weakly-bound Feshbach state to the rovibrational ground state with a resolution of ~5 kHz over an energy-level difference of more than 114 THz; this lets us discern the hyperfine splitting of the ground state. Combined with theoretical models of the Feshbach state binding energies and ground-state hyperfine structure, we determine a zero-field binding energy of 114 268 135.24(4)(3) MHz. To our knowledge, this is the most accurate determination to date of the dissociation energy of a molecule.

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Resource type: Dataset
Contributors: Creator: Molony, Peter K. ¹
Data collector: Molony, Peter K. ¹
Data collector: Kumar, Avinash ¹
Data collector: Gregory, Philip D. ¹
Data collector: Kliese, Russell ²
Data collector: Puppe, Thomas ²
Data collector: Le Sueur, C. Ruth ¹
Data collector: Aldegunde, Jesus ³
Data collector: Hutson, Jeremy M. ¹
Contact person: Cornish, Simon L. ¹
Data collector: Cornish, Simon L. ¹

¹ Durham University, UK
² Toptica Photonics AG
³ Universidad de Salamanca
Funder: Engineering and Physical Sciences Research Council
Research methods
Other description: Data for the above publication, and Excel spreadsheets of the main analysis and error calculations.
Keyword: RbCs
molecules
ultracold
frequency comb
binding energy
Subject: Molecular structure
Infrared spectroscopy
Metrology
Location: Durham, UK
Language: English
Cited in
Identifier: ark:/32150/r244558d28c
doi:10.15128/r244558d28c
Publisher: Durham University
Date Created

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Depositor: P.K. Molony
Date Uploaded: 13 June 2016, 16:06:14
Date Modified: 10 August 2016, 09:08:36
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Last modified: 2016:06:14 14:20:11+01:00

Filename: RbCsBindingEnergyPublicData.zip

Original checksum: 4d400cc905f513ac0ad1751c7d71ba20

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User P.K. Molony has updated Supporting data: Measurement of the binding energy of ultracold 87Rb133Cs molecules using an offset-free optical frequency comb	over 8 years ago
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User P.K. Molony has deposited RbCsBindingEnergyPublicData.zip	over 8 years ago