Dead-zone-free atomic magnetometry with simultaneous excitation of orientation and alignment resonances

A. Ben-Kish, M. V. Romalis

Research output: Contribution to journalArticle

35 Scopus citations

Abstract

Atomic magnetometers have very high absolute precision and sensitivity to magnetic fields but suffer from a fundamental problem: the vectorial or tensorial interaction of light with atoms leads to "dead zones," certain orientations of the magnetic field where the magnetometer loses its sensitivity. We demonstrate a simple polarization modulation scheme that simultaneously creates coherent population trapping (CPT) in orientation and alignment, thereby eliminating dead zones. Using Rb87 in a 10 Torr buffer gas cell we measure narrow, high-contrast CPT transparency peaks for all orientations and also show the absence of systematic effects associated with nonlinear Zeeman splitting.

Original languageEnglish (US)
Article number193601
JournalPhysical review letters
Volume105
Issue number19
DOIs
StatePublished - Nov 4 2010

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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