Nonlinear magneto-optical rotation with frequency-modulated light in the geophysical field range

Journal Article · Mon May 15 04:00:00 EDT 2006 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.73.0· OSTI ID:20787274

Acosta, V; Ledbetter, M P; Rochester, S M; Budker, D; Jackson Kimball, D F; Hovde, D C; Gawlik, W; Pustelny, S; Zachorowski, J; Yashchuk, V V ^[1]

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1. Department of Physics, University of California at Berkeley, Berkeley, California 94720-7300 (United States)

Recent work investigating resonant nonlinear magneto-optical rotation (NMOR) related to long-lived ({tau}{sub rel}{approx}1s) ground-state atomic coherences has demonstrated potential magnetometric sensitivities exceeding 10{sup -11} G/{radical}(Hz) for small (< or approx. 1 {mu}G) magnetic fields. In the present work, NMOR using frequency-modulated light (FM NMOR) is studied in the regime where the longitudinal magnetic field is in the geophysical range({approx}500mG), of particular interest for many applications. In this regime a splitting of the FM NMOR resonance due to the nonlinear Zeeman effect is observed. At sufficiently high light intensities, there is also a splitting of the FM NMOR resonances due to ac Stark shifts induced by the optical field, as well as evidence of alignment-to-orientation conversion type processes. The consequences of these effects for FM-NMOR-based atomic magnetometry in the geophysical field range are considered.

• OSTI ID: 20787274
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 73; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
CONVERSION
GROUND STATES
MAGNETIC FIELDS
MAGNETO-OPTICAL EFFECTS
NONLINEAR PROBLEMS
ORIENTATION
POTENTIALS
RESONANCE
ROTATION
SENSITIVITY
STARK EFFECT
VISIBLE RADIATION
ZEEMAN EFFECT