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Physical Review Letters

Zeeman Effect in the Two-Photon 3S−5S Transition in Sodium Vapor

N. Bloembergen, M. D. Levenson, M. M. Salour

Published Apr 22, 1974• 67 citations
Publisher

Abstract

The technique of two-photon absorption without Doppler broadening has made possible the observation of the Zeeman splitting of a transition between two $^{2}S$ states. Selection rules are discussed. The observed pattern of hyperfine components is narrower in very high fields than in zero field, in agreement with the theory.

DOI
10.1103/physrevlett.32.867

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Journal of Physics B Atomic and Molecular Physics•Sep 14, 1978•8 citations
The technique of two-photon absorption without Doppler broadening has made possible the observation of the Zeeman splitting of a transition between two 2S^{2}S2S states. Selection rules are discussed. The observed pattern of hyperfine components is narrower in very high fields than in zero field, in agreement with the theory.
The $3S\ensuremath{-}5S$ transition of Na atoms is induced by absorption of two photons, one each from two circularly polarized beams traveling in opposite directions through the vapor. The beams are derived from a tunable, narrow-band pulsed dye laser. Doppler broadening is absent and the hyperfine structure is resolved. The hyperfine interaction constant A5S{A}_{5S}A5S​ in the 5S5S5S state of the Na23{\mathrm{Na}}^{23}Na23 atom is determined to be 101\ifmmode\pm\else\textpm\fi{}15 MHz.