Optical spectroscopy of a microsized Rb vapor sample in magnetic fields up to 58 T

D. Ciampini, R. Battesti, C. Rizzo, and E. Arimondo
Phys. Rev. A 96, 052504 – Published 14 November 2017

Abstract

We use a magnetometer probe based on the Zeeman shift of the rubidium resonant optical transition to explore the atomic magnetic response for a wide range of field values. We record optical spectra for fields from a few tesla up to 60 T, the limit of the coil producing the magnetic field. The atomic absorption is detected by the fluorescence emissions from a very small region with a submillimeter size. We investigate a wide range of magnetic interactions from the hyperfine Paschen-Back regime to the fine one and the transitions between them. The magnetic field measurement is based on the rubidium absorption itself. The rubidium spectroscopic constants were previously measured with high precision, except the excited state Landé g-factor that we derive from the position of the absorption lines in the transition to the fine Paschen-Back regime. Our spectroscopic investigation, even if limited by the Doppler broadening of the absorption lines, measures the field with a 20 ppm uncertainty at the explored high magnetic fields. Its accuracy is limited to 75 ppm by the excited state Landé g-factor determination.

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  • Received 1 August 2017

DOI:https://doi.org/10.1103/PhysRevA.96.052504

©2017 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

D. Ciampini*

  • Dipartimento di Fisica “E. Fermi,” Università di Pisa, Largo B. Pontecorvo 3, 56127 Pisa, Italy; INO-CNR, Via G. Moruzzi 1, 56124 Pisa, Italy; and CNISM, UdR Dipartimento di Fisica “E. Fermi,” Università di Pisa, Largo B. Pontecorvo 3, 56127 Pisa, Italy

R. Battesti and C. Rizzo

  • Laboratoire National Des Champs Magnétiques Intenses (UPR 3228, CNRS-UPS-UGA-INSA), F-31400 Toulouse Cedex, France

E. Arimondo

  • Laboratoire National des Champs Magnétiques Intenses (UPR 3228, CNRS-UPS-UGA-INSA), F-31400 Toulouse Cedex, France; Dipartimento di Fisica “E. Fermi,” Università di Pisa, Largo B. Pontecorvo 3, 56127 Pisa, Italy; and INO-CNR, Via G. Moruzzi 1, 56124 Pisa, Italy

  • *donatella.ciampini@unipi.it

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Issue

Vol. 96, Iss. 5 — November 2017

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