Spectroscopy, crystal-field, and transition intensity analyses of the C3v(O2−) Centre in Er3+ Doped CaF2 Crystals

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dc.contributor.authorMoull , M. D.
dc.contributor.authorMartin , J. B. L.
dc.contributor.authorNewman, T. G. M.
dc.contributor.authorJeffery , A. L.
dc.contributor.authorBartholomew , J. G.
dc.contributor.authorWells , J. -P. R.
dc.contributor.authorReid, Michael
dc.date.accessioned2025-02-02T20:04:13Z
dc.date.available2025-02-02T20:04:13Z
dc.date.issued2024
dc.description.abstractErbium ions in crystals show considerable promise for the technologies that will form the backbone of future networked quantum information technology. Despite advances in leveraging erbium’s fibre-compatible infrared transition for classical and quantum applications, the transitions are, in general, not well understood. We present detailed absorption and laser site-selective spectroscopy of the C3v(O2−) centre in CaF2 :Er3+ as an interesting erbium site case study. The 4 I15∕2Z1 → 4 I13∕2Y1 transition has a low-temperature inhomogeneous linewidth of 1 GHz with hyperfine structure observable from the 167Er isotope. A parametrized crystal-field Hamiltonian is fitted to 34 energy levels and the two ground state magnetic splitting factors. The wavefunctions are used to perform a transition intensity analysis and electric-dipole parameters are fitted to absorption oscillator strengths. Simulated spectra for the 4 I11∕2 → 4 I15∕2 and 4 I13∕2 → 4 I15∕2 inter-multiplet transitions are in excellent agreement with the experimentally measured spectra. The 4 I13∕2 excited state lifetime is 25.0 ms and the intensity calculation is in excellent agreement with this value.
dc.identifier.citationMoull MD, Martin JBL, Newman TGM, Jeffery AL, Bartholomew JG, Wells J-PR, Reid MF (2024). Spectroscopy, crystal-field, and transition intensity analyses of the C3v(O2−) Centre in Er3+ Doped CaF2 Crystals
dc.identifier.doihttp://doi.org/10.1016/j.omx.2024.100365
dc.identifier.issn2590-1478
dc.identifier.urihttps://hdl.handle.net/10092/107623
dc.languageen
dc.publisherElsevier BV
dc.rightsAll rights reserved unless otherwise stated
dc.rights.urihttp://hdl.handle.net/10092/17651
dc.subjectrare-earth
dc.subjectcrystal-field analysis
dc.subjectspectroscopy
dc.subjectErbium
dc.subjectCaF2
dc.subjectquantum technologies
dc.subject.anzsrc34 - Chemical sciences::3402 - Inorganic chemistry::340202 - Crystallography
dc.titleSpectroscopy, crystal-field, and transition intensity analyses of the C3v(O2−) Centre in Er3+ Doped CaF2 Crystals
dc.typeJournal Article
uc.collegeFaculty of Science
uc.departmentSchool of Physical & Chemical Sciences
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