Optical Ramsey spectroscopy in a rotating frame : Sagnac effect in a matter-wave interferometer

A calcium atomic beam excited in an optical Ramsey geometry was rotated about an axis perpendicular to the plane defined by the laser beams and the atomic beam. A frequency shift of the Ramsey fringes of several kHz has been measured which is proportional to the rotation frequency of the apparatus a...

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Bibliographic Details
Published in:Physical review letters 1991-07, Vol.67 (2), p.177-180
Main Authors: RIEHLE, F, KISTERS, T, WITTE, A, HELMCKE, H, BORDE, C. J
Format: Article
Language:English
Subjects:
ALKALINE EARTH METALS
Atomic and molecular physics
ATOMIC BEAMS
Atomic properties and interactions with photons
BEAMS
CALCIUM
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
ELECTROMAGNETIC RADIATION
ELEMENTS
Exact sciences and technology
FLUORESCENCE
INTERFEROMETRY
LASER RADIATION
LUMINESCENCE
METALS
MOTION
PHASE SHIFT
Photon interactions with atoms
Physics
RADIATIONS 640301 > Atomic, Molecular & Chemical Physics-- Beams & their Reactions
ROTATION
SPECTRAL SHIFT
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Summary:A calcium atomic beam excited in an optical Ramsey geometry was rotated about an axis perpendicular to the plane defined by the laser beams and the atomic beam. A frequency shift of the Ramsey fringes of several kHz has been measured which is proportional to the rotation frequency of the apparatus and to the distance between the laser beams. The results can be interpreted in three equivalent ways as the Sagnac effect in a calcium- atomic-beam interferometer: in the rotating frame of the laser beams either along straight paths or along the curved trajectories of the atoms, or in the inertial atomic frame. (Author)
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.67.177