We investigate degenerate four-wave mixing on the 607.4-nm line of neon using crossed-polarized beams. We show that the line shape changes dramatically in the presence of a magnetic field. Narrow resonances are observed, which are interpreted as level-crossing resonances in the energy diagram of the dressed atom.

Optics LettersSep 1, 198416 citations

"Anticrossing" Signals in Resonance Fluorescence

Harold Wieder, T. G. Eck

Physical ReviewJan 5, 1967125 citations

Physics Letters A

Some remarks on the application of the terms level-crossing and line-crossing in atomic spectroscopy

Wilhelm Hanle, P. Wirz

Published Jun 1, 1978• 0 citations

Publisher

DOI: 10.1016/0375-9601(78)90060-9

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The level-crossing technique of atomic spectroscopy utilizes the spatial interference in the scattering of resonance radiation which can occur when two Zeeman levels of an atom are brought into coincidence ("crossed") by the application of an external magnetic field. "Anticrossing" refers to the case where the two levels involved are coupled by a small static interaction. In this paper the general expression for an anticrossing signal is given and its predictions compared with signals observed in the $2 ^{2}P$ term of Li. It is shown that anticrossings produce signals in many experimental situations for which there would be no signal from a normal level crossing.The level-crossing technique of atomic spectroscopy utilizes the spatial interference in the scattering of resonance radiation which can occur when two Zeeman levels of an atom are brought into coincidence ("crossed") by the application of an external magnetic field. "Anticrossing" refers to the case where the two levels involved are coupled by a small static interaction. In this paper the general expression for an anticrossing signal is given and its predictions compared with signals observed in the $2 ^{2}P$ term of Li. It is shown that anticrossings produce signals in many experimental situations for which there would be no signal from a normal level crossing.

Physical ReviewJan 5, 1967125 citations

2 ^{2}P

term of Li. It is shown that anticrossings produce signals in many experimental situations for which there would be no signal from a normal level crossing.