Magneto-optic spectroscopy with linearly polarized modulated light: Theory and experiment
- Bevilacqua, Giuseppe Department of Information Engineering and Mathematical Science, University of Siena, Italy
- Breschi, Evelina Department of Physics, University of Fribourg, Switzerland
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18.06.2014
Published in:
- Physical Review A. - 2014, vol. 89, no. 6, p. 062507
English
We investigate the polarization modulation between two linear orthogonal states of the laser beam that synchronously pumps time-dependent atomic alignment in caesium atoms exposed to a static magnetic field. Because of the atomic alignment symmetry two independent groups of resonances can be distinguished in the transmitted light: when modulation frequency matches either the Larmor frequency or its second harmonics, ωL and 2ωL, respectively. We report on our experiments, and discuss a model that perfectly reproduces the observed spectra. We have observed that the amplitudes and linewidths of resonances at ωL and 2ωL show magnetic-field direction dependence. This peculiar behavior makes our approach interesting for future application to atomic magnetometry, in view of a dead-zone free high-sensitivity magnetometer.
- Faculty
- Faculté des sciences et de médecine
- Department
- Département de Physique
- Language
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- English
- Classification
- Physics
- License
- License undefined
- Identifiers
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- RERO DOC 231785
- DOI 10.1103/PhysRevA.89.062507
- Persistent URL
- https://folia.unifr.ch/unifr/documents/303771
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