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Nonlinear magneto-optical rotation with frequency-modulated light
- Source :
- Scopus-Elsevier
- Publication Year :
- 2002
-
Abstract
- A magnetometric technique is demonstrated that may be suitable for precision measurements of fields ranging from the sub-microgauss level to above the Earth field. It is based on resonant nonlinear magneto-optical rotation caused by atoms contained in a vapor cell with anti-relaxation wall coating. Linearly polarized, frequency-modulated laser light is used for optical pumping and probing. If the time-dependent optical rotation is measured at the first harmonic of the modulation frequency, ultra-narrow (~a few Hz) resonances are observed at near-zero magnetic fields, and at fields where the Larmor frequency coincides with half the light modulation frequency. Upon optimization, the sensitivity of the technique is expected to exceed 10^{-11} G/sqrt{Hz}.<br />5 pages, 4 figures
- Subjects :
- Physics
Larmor precession
Field (physics)
business.industry
Linear polarization
Atomic Physics (physics.atom-ph)
FOS: Physical sciences
Rotation
Atomic and Molecular Physics, and Optics
Magnetic field
Physics - Atomic Physics
Optical pumping
Optics
Sensitivity (control systems)
Physics::Atomic Physics
Atomic physics
Optical rotation
business
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Scopus-Elsevier
- Accession number :
- edsair.doi.dedup.....b4c06f682aaf84c33ab6985d7e16a0a3