Abstract

We report on a two-channel magnetometer based on nonlinear magneto-optical rotation in a Cs glass cell with buffer gas. The Cs atoms are optically pumped and probed by free running diode lasers tuned to the D2 line. A wide frequency modulation of the pump laser is used to produce both synchronous Zeeman optical pumping and hyperfine repumping. The magnetometer works in an unshielded environment, and a spurious signal from distant magnetic sources is rejected by means of differential measurement. In this regime the magnetometer simultaneously gives the magnetic field modulus and the field difference. Rejection of the common-mode noise allows for high-resolution magnetometry with a sensitivity of 2pTHz. This sensitivity, in conjunction with long-term stability and a large bandwidth, makes it possible to detect water proton magnetization and its free induction decay in a measurement volume of 5cm3.

© 2009 Optical Society of America

Full Article  |  PDF Article
Related Articles
Optical magnetic-resonance imaging of laser-polarized Cs atoms

Kiyoshi Ishikawa, Yoshihiro Anraku, Yoshiro Takahashi, and Tsutomu Yabuzaki
J. Opt. Soc. Am. B 16(1) 31-37 (1999)

Magnetic resonance line shapes in optical pumping and light-shift experiments in alkali atomic vapors

J. Skalla, S. Lang, and G. Wäckerle
J. Opt. Soc. Am. B 12(5) 772-781 (1995)

Dynamic effects in nonlinear magneto-optics of atoms and molecules: review

Evgeniy B. Alexandrov, Marcis Auzinsh, Dmitry Budker, Derek F. Kimball, Simon M. Rochester, and Valeriy V. Yashchuk
J. Opt. Soc. Am. B 22(1) 7-20 (2005)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (9)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription