Effects of spin-exchange collisions in a high-density alkali-metal vapor in low magnetic fields

I. M. Savukov, M. V. Romalis

Research output: Contribution to journalArticle

94 Scopus citations

Abstract

Spin-exchange collisions often play a dominant role in the broadening of Zeeman resonances in an alkali-metal vapor. Contrary to intuitive expectations, at high alkali-metal densities this broadening can be completely eliminated by operating in a low magnetic field, allowing construction of ultrasensitive atomic magnetometers. We describe a detailed study of the Zeeman resonance frequencies and linewidths as a function of the magnetic field, alkali-metal density, and the degree of spin polarization of the atoms. Due to the nonlinear nature of the density matrix equations describing the spin-exchange collisions both the gyromagnetic ratio and the linewidth change as a function of the polarization. The results of experimental measurements are in excellent agreement with analytical and numerical solutions of the density matrix equations.

Original languageEnglish (US)
Article number023405
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume71
Issue number2
DOIs
StatePublished - Feb 1 2005

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Fingerprint Dive into the research topics of 'Effects of spin-exchange collisions in a high-density alkali-metal vapor in low magnetic fields'. Together they form a unique fingerprint.

  • Cite this