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

Journal Article · Wed May 17 04:00:00 EDT 2006 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.73.053404· OSTI ID:926576

Acosta, V; Ledbetter, M P; Rochester, S M; Budker, D; JacksonKimball, D F; Hovde, D C; Gawlik, W; Pustelny, S; Zachorowski, J; Yashchuk, V V

Recent work investigating resonant nonlinear magneto-opticalrotation (NMOR) related to long-lived (tau_rel approx 1s) ground-stateatomic coherences has demonstrated potential magnetometric sensitivitiesexceeding (10-11 G Hz-1/2) for small (<1 micro G) magnetic fields. Inthe present work, NMOR using frequency-modulated light (FM NMOR) isstudied in the regime where the longitudinal magnetic field is in thegeophysical range (sim 500mG), of particular interest for manyapplications. In this regime a splitting of the FM NMOR resonancedue tothe nonlinear Zeeman effect is observed. At sufficiently high lightintensities, there is also a splitting of the FM NMOR resonances due toac Stark shifts induced by the optical field, as well as evidence ofalignment-to-orientation conversion type processes. The consequences ofthese effects for FM-NMOR-based atomic magnetometry in the geophysicalfield range are considered.

• Research Organization: COLLABORATION - UCBerkeley
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 926576
• Report Number(s): LBNL--60854; BnR: YN0100000
• Journal Information: Physical Review A, Journal Name: Physical Review A Vol. 73
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
Optical magnetometry Nonlinear magneto-optical rotation Zeemaneffect Nonlinear Zeeman effect ac Start effect